Writing B2 - Skills Practice: Written Expression
This section consists of a number of sentences with blanks, each followed by four answers choices.
Read the sentence and the answer choices. Choose the answer choice that best completes the sentence.
Questions and Answers
- 1.
In addition to quitting smoking and controlling blood pressure and diet, people need to think about how ______________ stress to avert potentially fatal heart problems.
- A.
Can they manage
- B.
The management
- C.
They manage
- D.
Managing
Correct Answer
C. They manageExplanation
This sentence has a main clause people need… and the question-word connector how. This sentence needs a subject and a verb following the connector how to be complete. Answer C is the best answer because it contains the subject and verb they manage. Answer A contains an inverted subject and verb, answer B is missing a verb, and answer D is missing a subject and contains an incomplete verb, so these answers are incorrect.Rate this question:
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- 2.
Rarely ________ now used for battle purposes.
- A.
In the band
- B.
Military bands are
- C.
Banded
- D.
Are military bands
Correct Answer
D. Are military bandsExplanation
This sentence begins with the negative expression rarely. This sentence needs an inverted subject and verb following the introductory negative expression to be complete. Answer D is the best answer because it contains the inverted subject and verb are military bands. Answer A contains a prepositional phrase, answer B contains a subject and verb that are not inverted, and answer C is missing a subject and contains an incomplete verb, so these answers are incorrect.Rate this question:
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- 3.
Only recently _________ popular all over the country.
- A.
Have indoor climbing gyms become
- B.
In becoming indoor climbing gyms
- C.
Indoors climbing gyms have become
- D.
Indoor climbing gyms
Correct Answer
A. Have indoor climbing gyms becomeExplanation
This sentence begins with the negative expression Only recently. This sentence needs an inverted subject and verb following the introductory negative expression to be complete. Answer A is the best answer because it contains the inverted subject and verb have indoor climbing gyms become. Answer B contains a prepositional phrase, answer C contains a subject and verb that are not inverted, and answer D is missing a verb, so these answers are incorrect.Rate this question:
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- 4.
A motionless atom is colder than _________________.
- A.
In the movement
- B.
To be moved
- C.
The atom moving
- D.
Is a moving atom
Correct Answer
D. Is a moving atomExplanation
This sentence has a main clause A motionless atom is and a comparative expression colder than. A comparative can be followed by an inverted subject and verb. Answer D is the best answer because it contains an inverted subject and verb is a moving atom. Answer A contains a prepositional phrase, answer B contains an infinitive, and answer C contains a reduced verb, so these answers are incorrect.Rate this question:
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- 5.
According to a recent survey, were _________ of telecommuters to lose their jobs, they would look for other telecommuting positions.
- A.
To major
- B.
If a majority
- C.
A majority
- D.
In the major
Correct Answer
C. A majorityExplanation
This sentence has a main clause they would look... and an incomplete inverted conditional were… This sentence needs a subject to be complete. Answer C is the best answer because it contains the subject a majority. Answer A contains an infinitive, answer B contains an extra connector, and answer D contains a prepositional phrase, so these answers are incorrect.Rate this question:
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- 6.
In the sand of the northern California coast ____________ San Agustin, which is said to be loaded with gold.
- A.
The galleon is lying
- B.
Lies the galleon
- C.
The galleon
- D.
The galleon which lies
Correct Answer
B. Lies the galleonExplanation
This sentence begins with the place expression In the sand of the northern California coast. This sentence needs an inverted subject and verb following the introductory place expression to be complete. Answer B is the best answer because it contains the inverted subject and verb lies the galleon. Answer A contains a subject and verb that are not inverted, answer C is missing a verb, and answer D contains an extra connector/subject and a subject and verb that are not inverted, so these answers are incorrect.Rate this question:
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- 7.
When ______________ chest pain, some doctors recommend that they take one full 325- milligram aspirin.
- A.
Patients feel
- B.
Feel impatient
- C.
Do patients feel
- D.
As patients feel
Correct Answer
A. Patients feelExplanation
This sentence has the question-word connector When and the main clause some doctors recommend... This sentence needs a subject and verb following the connector when to be complete. Answer A is the best answer because it contains the subject and verb patients feel. Answer B is missing a subject, answer C contains an extra helping verb, and answer D contains an extra connector, so these answers are incorrect.Rate this question:
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- 8.
Only in the Civil War ___________ killed or wounded.
- A.
Soldiers in America
- B.
Were so many American soldiers
- C.
Many in America
- D.
So many American soldiers were
Correct Answer
B. Were so many American soldiersExplanation
This sentence begins with the negative expression Only. This sentence needs an inverted subject and passive helping verb following the introductory negative expression to be complete. Answer B is the best answer because it contains the inverted subject and passive helping verb were so many American soldiers. Answers A and C are each missing a verb, and answer D contains a subject and verb that are not inverted, so these answers are incorrect.Rate this question:
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- 9.
There __________ called Epstein-Barr which leaves people feeling chronically fatigued and feeling as if they have a recurring case of the flu.
- A.
A viral
- B.
In a disease
- C.
A virus is
- D.
Is a virus
Correct Answer
D. Is a virusExplanation
This sentence begins with the place expression There. This sentence needs an inverted subject and verb following the introductory place expression to be complete. Answer D is the best answer because it contains the inverted subject and verb is a virus. Answer A contains an adjective, answer B contains a prepositional phrase, and answer C contains a subject and verb that are not inverted, so these answers are incorrect.Rate this question:
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- 10.
Lifestyle is more important __________ in a person’s lifespan.
- A.
As genetics are
- B.
With genes
- C.
Genetically
- D.
Than are genetics
Correct Answer
D. Than are geneticsExplanation
This sentence has a complete main clause Lifestyle is... and an incomplete comparative expression more important… A comparative can be followed by an inverted subject and verb. Answer D is the best answer because it contains part of a comparison than and the inverted subject and verb are genetics. Answer A contains an extra connector and the subject and verb are not inverted, answer B contains a prepositional phrase, and answer C contains an extra adverb, so these answers are incorrect.Rate this question:
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- 11.
There has been a string of recent technology advances aimed t building new engines which are more clean and efficient than _____________.
- A.
To engineer
- B.
Are current engines
- C.
In engines currently
- D.
Current
Correct Answer
B. Are current enginesExplanation
This sentence has a main clause There has been a string... and a comparative expression more… than… A comparative can be followed by an inverted subject and verb. Answer B is the best answer because it contains an inverted subject and verb are current engines. Answer A contains an infinitive, answer C contains a prepositional phrase, and answer D contains an adjective, so these answers are incorrect.Rate this question:
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- 12.
In the vessels of the vascular system of the giraffe _________ of valves that ensures a needed supply of blood to the head.
- A.
Are series
- B.
Is serious
- C.
Is a series
- D.
A series is
Correct Answer
C. Is a seriesExplanation
This sentence begins with the place expressions In the vessels… of the giraffe. This sentence needs an inverted singular subject and verb following the introductory place expressions to be complete. Answer C is the best answer because it contains the inverted singular subject and verb is a series. Answer A contains an inverted plural subject and verb, answer B is missing a subject, and answer D contains a subject and a verb that are not inverted, so these answers are incorrect.Rate this question:
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- 13.
Should _________ help keeping their weight, blood pressure, pulse, and cholesterol down, swimming is an excellent activity.
- A.
Adults need
- B.
Needy adults
- C.
To need
- D.
Needs adults
Correct Answer
A. Adults needExplanation
This sentence has a main clause swimming is... and an incomplete inverted conditional should… This sentence needs a subject and main verb to be complete. Answer A is the best answer because it contains a subject and main verb adults need. Answer B is missing a verb, answer C contains an infinitive, and answer C contains an inverted subject and verb, so these answers are incorrect.Rate this question:
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- 14.
A collision with another galaxy may be what _______, the Milky Way, may experience.
- A.
Earth’s galaxy is
- B.
Is Earth’s galaxy
- C.
Earth’s galaxy
- D.
For Earth’s galaxy
Correct Answer
C. Earth’s galaxyExplanation
This sentence has the main clause A collision… may be... and the question-word connector what. This sentence needs a subject following the connector to be complete. Answer C is the best answer because it contains the subject Earth’s galaxy. Answers A and B each contain an extra verb, and answer D contains a prepositional phrase, so these answers are incorrect.Rate this question:
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- 15.
Scarcely __________ started building his theme park when he launched his first television program titled Disneyland.
- A.
Walt Disney
- B.
Walt Disney had
- C.
Had Walt Disney
- D.
Walt Disney was
Correct Answer
C. Had Walt DisneyExplanation
This sentence begins with the negative expression Scarcely. This sentence needs an inverted subject and active helping verb following the introductory negative expression to be complete. Answer C is the best answer because it contains an inverted subject and active helping verb had Walt Disney. Answer A is missing a verb, answer B contains a subject and active helping verb that are not inverted, and answer D contains a passive helping verb, so these answers are incorrect.Rate this question:
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- 16.
Daylight saving time seems to reduce people’s exposure to crime, so were people to get home from work and school and complete more errands and chores in daylight, ____________ safer.
- A.
For being
- B.
To be
- C.
They
- D.
They would be
Correct Answer
D. They would beExplanation
This sentence has a main clause Daylight saving time seems to reduce... a complete inverted conditional clause were people, and n incomplete main clause …safer. This sentence needs a subject and a verb in the second main clause to be complete. Answer D is the best answer because it contains a subject and verb they would be. Answer A contains a prepositional phrase, answer B contains an infinitive, and answer C contains is missing a verb, so these answers are incorrect.Rate this question:
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- 17.
The hunting season for firearms is more restricted than _______ because hunting with firearms is more dangerous and less challenging.
- A.
To season
- B.
Is the archery season
- C.
For archery
- D.
Is seasoning
Correct Answer
B. Is the archery seasonExplanation
This sentence has a main clause The hunting season for firearms is and a comparative expression more… than. A comparative can be followed by an inverted subject and verb. Answer B is the best answer because it contains an inverted subject and verb is the archery season. Answer A contains an infinitive, answer C contains a prepositional phrase, and answer D contains a verb, so these answers are incorrect.Rate this question:
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- 18.
Orthopedic and sports medicine specialists now realize that _________ people to get prolonged bed rest for acute and chronic back problems, they would heal less quickly.
- A.
Were
- B.
If
- C.
The
- D.
Of
Correct Answer
A. WereExplanation
This sentence has a main clause …specialists now realize, an incomplete inverted conditional clause …people…, and a noun clause that… they would heal… This sentence needs a verb in the inverted conditional to be complete. Answer A is the best answer because it contains the verb were. Answer B contains a connector, answer C contains an article, and answer D contains a preposition, so these answers are incorrect.Rate this question:
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- 19.
Scientists now know that the lack of an embryonic thumb in birds is why ____________ almost impossible for birds and dinosaurs to be related.
- A.
Is
- B.
It is
- C.
Is it
- D.
It
Correct Answer
B. It isExplanation
This sentence has a main clause Scientist now know… and the question-word connector why. This sentence needs a subject and a verb following the connector why to be complete. Answer B is the best answer because it contains the subject and verb it is. Answer A is missing a subject, answer C contains an inverted subject and verb, and answer D is missing a verb, so these answers are incorrect.Rate this question:
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- 20.
There ________ launched in 1958 that fell back to Earth and burned up in the atmosphere.
- A.
A lunar probe was
- B.
Was a lunar probe
- C.
A lunar probe
- D.
With a lunar probe
Correct Answer
B. Was a lunar probeExplanation
This sentence begins with the place expression There. This sentence needs an inverted subject and verb following the introductory place expression to be complete. Answer B is the best answer because it contains the inverted subject and verb was a lunar probe. Answer A contains a subject and verb that are not inverted, answer C is missing a verb, and answer D contains a prepositional phrase, so these answers are incorrect.Rate this question:
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- 21.
In the halcyon days of the civil rights movement, a small group of dedicated lawyers, mostly black, ___________ carefully craft the strategy that led to the destruction of legal segregation.
- A.
Which is able to
- B.
Was able to
- C.
Able to
- D.
Were able
Correct Answer
B. Was able toExplanation
This sentence has a complete reduced adjective clause mostly black and an incomplete main clause a small group… This incomplete main clause needs a singular verb to be complete. Answer B is the best answer because it contains the singular verb was. Answer A contains an extra connector/subject and a verb tense that is not logical, answer C contains an adjective, and answer D contains a plural verb, so these answers are incorrect.Rate this question:
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- 22.
The birth of swing music can be traced to Battle of the Bands competitions ____________ at the Savoy Ballroom in Harlem.
- A.
Held
- B.
Were held
- C.
The holdings
- D.
To hold
Correct Answer
A. HeldExplanation
This sentence has a complete main clause The birth…can be traced… and an incomplete reduced adjective clause …at the Savoy Ballroom… This incomplete reduced adjective clause needs a reduced verb to be complete. Answer A is the best answer because it contains the reduced verb held. Answer B contains an unreduced verb, answer C contains a noun, and answer D contains an infinitive, so these answers are incorrect.Rate this question:
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- 23.
On October 28, 1886, the Statue of Liberty, a gift from the people of France, __________ in New York Harbor by President Cleveland.
- A.
To dedicate
- B.
It dedicated
- C.
Was dedicated
- D.
Was dedicating
Correct Answer
C. Was dedicatedExplanation
This sentence has a complete reduced adjective clause a gift… and an incomplete main clause the Statue of Liberty… This incomplete main clause needs a passive verb to be complete because of the expression by President Cleveland. Answer C is the best answer because it contains the passive verb was dedicated. Answer A contains an infinitive, answer B contains an extra subject and an active verb, and answer D contains an active verb, so these answers are incorrect.Rate this question:
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- 24.
While making the embarrassing mistake of wearing a scarlet garment instead of somber black, ___________, the atomic chemist and Quaker, discovered that he was color-blind.
- A.
In John Dalton’s laboratory
- B.
John Dalton was
- C.
John Dalton
- D.
John Dalton and
Correct Answer
C. John DaltonExplanation
This sentence has a complete reduced adverb clause While making…, an incomplete main clause …discovered…, and a complete reduced adjective clause the atomic chemist and Quaker. This incomplete main clause needs a subject to be complete. Answer C is the best answer because it contains the subject John Dalton. Answer A contains a prepositional phrase, answer B contains an extra verb, and answer D contains an extra connector, so these answers are incorrect.Rate this question:
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- 25.
_____________Lake Erie and the Hudson River, the Erie Canal opened in upstate New York in 1825.
- A.
Linking
- B.
It was linked
- C.
Have been linking
- D.
The linked
Correct Answer
A. LinkingExplanation
This sentence has a complete main clause the Erie Canal opened… and an incomplete reduced adjective clause …Lake Erie… This incomplete reduced adjective clause needs a reduced verb to be complete. Answer A is the best answer because it contains the reduced verb Linking. Answers B and D each contain an extra subject and an unreduced verb, and answer C contains an unreduced verb, so these answers are incorrect.Rate this question:
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- 26.
Though racing toward the Milky Way galaxy at 300000 miles an hour, the Andromeda galaxy _________ with the Milky Way for about five billon years.
- A.
Colliding
- B.
Will not collide
- C.
To collide
- D.
The collision
Correct Answer
B. Will not collideExplanation
This sentence has a complete reduced adverb clause Though racing… and an incomplete main clause the Andromeda galaxy… This incomplete main clause needs an unreduced verb to be complete. Answer B is the best answer because it contains the unreduced verb will not collide. Answer A contains a reduced verb, answer C contains an infinitive, and answer D contains a noun, so these answers are incorrect.Rate this question:
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- 27.
While ______________, Chu developed a way of trapping thousands of gas atoms using lasers.
- A.
To work at Bell Laboratories
- B.
Working at Bell Laboratories
- C.
Worked at Bell Laboratories
- D.
Was working at Bell Laboratories
Correct Answer
B. Working at Bell LaboratoriesExplanation
This sentence has a complete main clause Chu developed… and an incomplete reduced adverb clause While… This incomplete reduced adverb clause needs a reduced active verb to be complete. Answer B is the best answer because it contains the reduced active verb working. Answer A contains an infinitive, answer C contains a reduced passive verb, and answer D contains an unreduced verb, so these answers are incorrect.Rate this question:
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- 28.
If introduced into avocado groves, the seed and stem weevils, seed moth, and fruit fly __________ the avocado industry in California.
- A.
The ending
- B.
May end
- C.
To end
- D.
They will end
Correct Answer
B. May endExplanation
This sentence has a complete reduced adverb clause If introduced… and an incomplete main clause the seed and stem weevils, seed moth, and fruit fly… This incomplete main clause needs an unreduced verb to be complete. Answer B is the best answer because it contains the unreduced verb may end. Answer A contains a noun, answer C contains an infinitive, and answer D contains an extra subject, so these answers are incorrect.Rate this question:
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- 29.
Although _____________ their jobs, a majority of workers expect to move on to other jobs within five years of starting their current jobs.
- A.
To enjoy
- B.
Enjoy
- C.
The enjoyment
- D.
Enjoying
Correct Answer
D. EnjoyingExplanation
This sentence has a complete main clause a majority of workers expect… and an incomplete reduced adverb clause Although… This incomplete reduced adverb clause needs a reduced verb to be complete. Answer D is the best answer because it contains the reduced verb enjoying. Answer A contains an infinitive, answer B contains an unreduced verb, and answer C contains a noun, so these answers are incorrect.Rate this question:
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- 30.
Most adults, including 78 percent of men and 61 percent of women, __________ that gender roles in marriage today are more equal than traditional.
- A.
Say
- B.
The say
- C.
Saying
- D.
To say
Correct Answer
A. SayExplanation
This sentence has a complete reduced adjective clause including… and an incomplete main clause Most adults… This incomplete main clause needs a unreduced verb to be complete. Answer A is the best answer because it contains the unreduced verb say. Answer B contains an extra subject, answer C contains a reduced verb, and answer D contains an infinitive, so these answers are incorrect.Rate this question:
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- 31.
While ____________ those who are not working members of the press, press pins provide access to a press box for media members.
- A.
Kept out
- B.
Keeping out
- C.
The keeper
- D.
Was kept out
Correct Answer
B. Keeping outExplanation
This sentence has a complete main clause press pins provide… and an incomplete reduced adverb clause while… This incomplete reduced adverb clause needs a reduced active verb to be complete. Answer B is the best answer because it contains the reduced verb keeping out. Answer A contains a reduced passive verb, answer C contains a noun, and answer D contains an unreduced verb, so these answers are incorrect.Rate this question:
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- 32.
_________________ New York and New Jersey, the George Washington Bridge opened to traffic in 1931.
- A.
Connecting
- B.
Which was connected
- C.
Connects
- D.
It connects
Correct Answer
A. ConnectingExplanation
This sentence has a complete main clause the George Washington Bridge opened… and an incomplete reduced adjective clause …New York and New Jersey. This incomplete reduced adjective clause needs a reduced verb to be complete. Answer A is the best answer because it contains the reduced verb connecting. Answer B contains a connector/subject that cannot be used at the beginning of a sentence and an unreduced verb, answer C contains an unreduced verb, and answer D contains an extra subject and an unreduced verb, so these answers are incorrect.Rate this question:
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- 33.
While repositioning, cruise ships ___________ passengers for what is called a line voyage.
- A.
The embarkation of
- B.
Embark
- C.
Embarking
- D.
They embark
Correct Answer
B. EmbarkExplanation
This sentence has a complete reduced adverb clause while repositioning and an incomplete main clause cruise ships… This incomplete main clause needs an unreduced verb to be complete. Answer B is the best answer because it contains the unreduced verb embark. Answer A contains a noun, answer C contains a reduced verb, and answer D contains an extra subject, so these answers are incorrect.Rate this question:
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- 34.
After ______ seven years to journey to Saturn, the spacecraft Cassini will spend four years exploring Saturn, its rings, and its icy moons.
- A.
Takes
- B.
Taken
- C.
Was taken
- D.
Taking
Correct Answer
D. TakingExplanation
This sentence has a complete main clause the spacecraft Cassini will spend… and an incomplete reduced adverb clause after… This incomplete reduced adverb clause needs a reduced active verb to be complete. Answer D is the best answer because it contains the reduced verb taking. Answers A and C each contain an unreduced verb, and answer B contains a reduced passive verb, so these answers are incorrect.Rate this question:
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- 35.
Although applied for in October of 1793, Eli Whitney’s patent for his cotton gin ________ until March of the following year.
- A.
Granting
- B.
It was not granted
- C.
To grant
- D.
Was not granted
Correct Answer
D. Was not grantedExplanation
This sentence has a complete reduced adverb clause Although applied… and an incomplete main clause Eli Whitney’s patent… This incomplete main clause needs an unreduced verb to be complete. Answer D is the best answer because it contains the unreduced verb was not granted. Answer A contains a reduced verb, answer B contains an extra subject, and answer C contains an infinitive, so these answers are incorrect.Rate this question:
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- 36.
________________, honoring the African tradition of celebrating the harvest, is held December 16 through January 1 in the United States.
- A.
For Kwanzaa
- B.
Kwanzaa was celebrated
- C.
Kwanzaa celebrations
- D.
Kwanzaa
Correct Answer
D. KwanzaaExplanation
This sentence has a complete reduced adjective clause honoring… and an incomplete main clause …is held… This incomplete main clause needs a singular subject to be complete. Answer D is the best answer because it contains the singular subject Kwanzaa. Answer A contains a prepositional phrase, answer B contains an extra verb, and answer C contains a plural noun, so these answers are incorrect.Rate this question:
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- 37.
The four-character drama Who’s Afraid of Virginia Woolf?, __________ by Edward Albee, opened on Broadway.
- A.
It was written
- B.
Who was written
- C.
Written
- D.
Was written
Correct Answer
C. WrittenExplanation
This sentence has a complete main clause The for-character drama…opened… and an incomplete reduced clause …by Edward Albee… This incomplete reduced adjective clause needs a reduced verb to be complete. Answer C is the best answer because it contains the reduced verb written. Answer A contains an extra subject and a verb, answer B contains an extra connector/subject, and answer D contains an unreduced verb, so these answers are incorrect.Rate this question:
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- 38.
_____________ famous civil rights leader, Martin Luther King, Jr. was named winner of the Nobel Peace Prize in 1964.
- A.
A
- B.
Which was
- C.
He was a
- D.
Was a
Correct Answer
A. AExplanation
This sentence has a complete main clause Martin Luther King, Jr. was named… and an incomplete reduced adjective clause …famous… This incomplete reduced adjective clause needs to be a complete phrase. Answer A is the best answer because it contains the article A, which completes the phrase. Answer B contains a connector/subject that cannot be uses at the beginning of a sentence and an extra verb, answer C contains an extra subject and a verb, and answers D contains an unreduced verb, so these answers are incorrect.Rate this question:
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- 39.
The surgeon operating without delay on an inflamed appendix _______ a far more serious complication, which is the rupture of a germ-laden appendix.
- A.
Which prevents
- B.
Preventing
- C.
Prevents
- D.
Prevention
Correct Answer
C. PreventsExplanation
This sentence has a complete reduced adjective clause operating… and an incomplete main clause The surgeon… This incomplete main clause needs an unreduced verb to be complete. Answer C is the best answer because it contains the unreduced verb prevents. Answer A contains an extra connector/subject, answer B contains a reduced verb, and answer D contains a noun, so these answers are incorrect.Rate this question:
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- 40.
Unless _____________ as injury-free as possible, older athletes can have their activity and quality of life affected.
- A.
The remnants of
- B.
To remain
- C.
Remaining
- D.
Remain
Correct Answer
C. RemainingExplanation
This sentence has a complete main clause older athletes can have… and an incomplete reduced adverb clause unless… This incomplete reduced adverb clause needs a reduced verb to be complete. Answer C is the best answer because it contains the reduced verb remaining. Answer A contains a noun, answer B contains an infinitive, and answer D contains an unreduced verb, so these answers are incorrect.Rate this question:
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- 41.
_______________ is so perfectly with their environment is what makes Frank Lloyd Wright’s architecture so distinctive.
- A.
That the buildings blend
- B.
The buildings blend
- C.
Since the buildings blend
- D.
Build and blend
Correct Answer
A. That the buildings blendExplanation
This sentence has a main verb is but needs a subject. A noun clause can be the subject of the verb is. The noun clause needs a connector, a subject, and a verb to be complete. Answer A is the best answer because it contains the connector that, the subject buildings, and the verb blend. Answer B is missing a connector, answer C contains an adverb clause connector, and answer D is missing a connector and a subject, so these answers are incorrect.Rate this question:
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- 42.
____________________ in the atmosphere is the temperature falling below freezing.
- A.
Frost is produced
- B.
Frost produces
- C.
What produces frost
- D.
What is frost
Correct Answer
C. What produces frostExplanation
This sentence has a main verb is but needs a subject. A noun clause can be the subject of the verb is. A noun clause subject needs a connector, a subject, and a verb to be complete. Answer C is the best answer because it contains the connector/subject what and the verb produces. Answers A and B are each missing a noun clause connector, and answer D has inverted subject and verb, so these answers are incorrect.Rate this question:
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- 43.
Subduction is the process _________ the ocean floor recycles itself.
- A.
That
- B.
Which is
- C.
By which
- D.
How
Correct Answer
C. By whichExplanation
This sentence has a main clause Subduction is the process… and an incomplete adjective clause …the ocean floor recycles... The adjective clause needs a prepositions and a connector to be complete. Answer C is the best answer because it contains the preposition by and the connector which. Answer A is missing a preposition, answer B is missing a preposition and also has an extra verb, and answer D uses a noun clause connector rather than an adjective clause connector, so these answers are incorrect.Rate this question:
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- 44.
The abundant grain harvest of North America can be credited to Norman Borlag, a little-known scientist ___________ modern strains of high-yield wheat.
- A.
Which cultivated
- B.
Cultivated
- C.
Who cultivated
- D.
The cultivation of
Correct Answer
C. Who cultivatedExplanation
This sentence has a complete main clause …grains harvests…can be credited… and an incomplete adjective clause ...modern strains…. The adjective clause needs a connector, a subject, and a verb to be complete. Answer C is the best answer because it contains the connector/subject who and the verb cultivated. Answer A contains a nonpersonal subject/connector that does not agree with the personal noun scientist, answer B is missing a connector or a subject, and answer D is missing a connector or a verb, so these answers are incorrect.Rate this question:
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- 45.
Although seismologists know __________, they are unable to predict with accuracy when or where a tremor might occur.
- A.
What causes earthquakes
- B.
What earthquakes
- C.
Causes earthquakes
- D.
That the quaking of the Earth
Correct Answer
A. What causes earthquakesExplanation
This sentence contains a main clause they are unable… and an incomplete adverb clause Although seismologists know..., which needs an object to be complete. A noun clause can be used as the object of know, and a noun clause needs a connector, a subject, and a verb. Answer A is the best answer because it contains the connector/subject what and the verb causes. Answers B and D are each missing a verb, and answer C is missing a connector and a subject, so these answers are incorrect.Rate this question:
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- 46.
Bees perform a complex dance ____________ other bees about the location of a good source of nectar.
- A.
Tells
- B.
Tell
- C.
It tells
- D.
That tells
Correct Answer
D. That tellsExplanation
This sentence has a complete main clause Bees perform… and an incomplete adjective clause …other bees. The adjective clause needs a connector, a subject, and a verb to be complete. Answer D is the best answer because it contains the connector/subject that and the verb tells. Answers A and B are each missing a connector or subject, and answer C is missing a connector, so these answers are incorrect.Rate this question:
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- 47.
Edmund Halley, who had discovered Halley’s comet in 1682, __________ before he could again see the comet whose return he had accurately predicted.
- A.
Died
- B.
Dying
- C.
On his death
- D.
To die
Correct Answer
A. DiedExplanation
This sentence has an incomplete main clause Edmund Halley… and two adjective clauses who has discovered Halley’s comet… and whose return he had accurately predicted. The main clause needs a verb to be complete. Answer A is the best answer because it contains the verb died. Answer B contains an incomplete verb, answer C contains a prepositional phrase, and answers D contains an infinitive, so these answers are incorrect.Rate this question:
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- 48.
Some radioisotopes which ________________ as radioactive waste are now being used in experimental cancer therapies.
- A.
Once discarded by scientists
- B.
Scientists discarded
- C.
To discard by scientists
- D.
Were discarded scientists
Correct Answer
B. Scientists discardedExplanation
This sentence has a main clause Some radioisotopes…are now being used… and an incomplete adjective clause which... The adjective clause needs a subject and a verb to be complete. Answer B is the best answer because it contains the subject scientists and the verb discarded. Answer A is missing the helping verb were, answer C contains an infinitive, and answer D is missing by after the passive verb, so these answers are incorrect.Rate this question:
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- 49.
___________ floats or sinks is determined by its density rather than its weight.
- A.
Whether an object
- B.
Object if it
- C.
Because an object
- D.
An object
Correct Answer
A. Whether an objectExplanation
This sentence has an incomplete noun clause …floats or sinks as the subject of the verb is determined. The noun clause needs a connector and a subject to be complete. Answer A is the best answer because it contains the connector whether and the subject object. Answer B contains an extra subject, answer C contains an adverb clause connector instead of a noun clause connector, and answer D is missing a noun clause connector, so these answers are incorrect.Rate this question:
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- 50.
_____________________ such a challenging science is that all theory is based on observations that cannot be replicated in a controlled environment.
- A.
It is astronomy
- B.
Astronomy is
- C.
What makes astronomy
- D.
Why is astronomy
Correct Answer
C. What makes astronomyExplanation
This sentence has a main verb is but needs a subject. A noun clause can be the subject of the verb is. A noun clause subject needs a connector, a subject, and a verb to be complete. Answer C is the best answer because it contains the connector/subject what and the verb makes. Answers A and B are each missing a connector, and answer D has an inverted subject and verb, so these answers are incorrect.Rate this question:
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Mar 22, 2023Quiz Edited by
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Jul 11, 2011Quiz Created by
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