1.
Which of the following sentences correctly uses a modal verb?
Correct Answer
A. She can speak three languages fluently.
Explanation
Modal verbs are auxiliary (helping) verbs that express necessity, possibility, ability, permission, or obligation. Examples of modal verbs include can, could, may, might, must, shall, should, will, and would. In sentence A, "can" is a modal verb that shows the ability to speak three languages. The other sentences contain grammatical errors, such as incorrect verb forms, and do not use modal verbs. Therefore, the correct answer is A.
2.
While you are driving, you ___ listen to the radio. It's not necessary.
Correct Answer
C. Don't have to
Explanation
The phrase "don't have to" indicates that listening to the radio while driving is not a requirement or obligation. It implies that it's perfectly acceptable to drive without listening to the radio. The other options are incorrect because:
"doesn't have to" is grammatically incorrect in this context.
"must" implies an obligation or necessity.
"must not" implies a prohibition.
3.
Which of the following sentences is correct when using the modal verb "must"?
Correct Answer
B. You must leave now.
Explanation
The modal verb "must" is used to express necessity or obligation. It is followed by the base form of the verb without "to" or any other auxiliary. In this case, "must leave" expresses the idea that leaving is required right now. "Must to leave" and "must leaving" are incorrect because modal verbs do not require the infinitive "to" or the gerund form of the verb. "Must have left" changes the meaning to past necessity, which isn't suitable for this immediate situation.
4.
If you plan to take a long trip in the car, you ___ get a full tank of gas, or you might run out of gas!
Correct Answer
A. Should
Explanation
The word "should" is used to give advice or suggest that something is a good idea. In this context, it means it is advisable to get a full tank of gas before taking a long trip to avoid the risk of running out of gas while on the road.
5.
When you are putting gasoline in your gas tank, you ___ smoke! It is forbidden.
Correct Answer
A. Must not
Explanation
The phrase "must not" is used to indicate a strict prohibition, meaning something is absolutely not allowed. In the context of putting gasoline in your gas tank, smoking is extremely dangerous due to the highly flammable nature of gasoline vapors. Igniting a cigarette could cause a fire or explosion, posing serious risks to safety. Therefore, "must not" emphasizes that smoking in this situation is forbidden and must be avoided at all costs.
6.
It's not a good idea to talk on a cell phone and drive at the same time. Drivers ___ do that.
Correct Answer
B. Shouldn't
Explanation
The sentence advises against talking on a cell phone while driving. The word "shouldn't" (should not) is used to give advice or to say that something is not a good idea. Therefore, "shouldn't" is the most appropriate word to complete the sentence.
7.
In some states, it is illegal to talk on a cell phone in your car. Those drivers ___ use phones in their cars.
Correct Answer
C. Must not
Explanation
In some states, it is illegal to talk on a cell phone in your car. This implies that there is a prohibition or restriction on using phones while driving. Therefore, the correct answer is "must not," indicating that drivers are not allowed or should not use phones in their cars in those states.
8.
You___________ help me if you don't have time. I can do the job myself.
Correct Answer
don't have to, Do not have to, don't need to, needn't, need not
Explanation
In this sentence, the speaker is expressing that it is not necessary or obligatory for the other person to help because the speaker can handle the job independently. "Don't have to" and "do not have to" both convey this sense of lack of obligation or necessity, indicating that assistance is not required. The other options, "don't need to" and "needn't," also convey the same meaning of lack of necessity in this context. So, any of these phrases can be used to complete the sentence appropriately.
9.
She __________ go to the doctor because she is feeling unwell.
Correct Answer
Should , should , will , Will
Explanation
In the sentence, "She should go to the doctor because she is feeling unwell," the modal verb "should" correctly fills in the blank.
10.
You __________ go into that room. It's forbidden!
Correct Answer
must not, mustn't
Explanation
The correct answer is "must not" because "must not" conveys the exact meaning of prohibition or a strong recommendation not to do something. The phrase indicates that entering the forbidden room is not allowed or advised.
11.
It's 2:20, and he said that he'd be here by 2:30. He __________ be here soon.
Correct Answer
should
Explanation
"Should" implies a probability or expectation that he will be here soon, based on his stated intention to arrive by 2:30. It suggests that it is likely he will keep his word and arrive within the next 10 minutes.
12.
I have a headache. __________ you buy some aspirin for me?
Correct Answer
could, can
Explanation
The word "could" is used in this sentence to express a polite request or suggestion. The speaker is asking the person to buy some aspirin for them because they have a headache. "Could" is a modal verb that is commonly used to make requests or ask for permission in a polite manner. In this context, it implies that the speaker is asking for a favor and is hoping that the person will agree to help them.
13.
Ray got injured yesterday. He __________ play today.
Correct Answer
can't, cannot , Can't , Cannot
Explanation
The correct word to complete the sentence is "cannot." This is because the sentence describes a past injury that affects Ray’s current ability to play. Using "cannot" expresses his present inability to play as a result of yesterday's injury. Other modals like "could" or "might" would not work here since they do not indicate an inability in the present.
14.
I __________ come to your party. I have to work.
Correct Answer
can't, cannot, Can't, Cannot
Explanation
The correct answer is "can't, cannot" because both "can't" and "cannot" are contractions of the phrase "cannot," which means "to be unable to do something." In this context, the speaker is expressing their inability to attend the party due to work obligations.
15.
__________ I make some coffee? I'll do it if you'll drink a cup.
Correct Answer
Shall
Explanation
The correct answer is "Shall" because it is used to express a suggestion or offer in this context. The speaker is asking if they should make some coffee, and they are willing to do it if the other person agrees to drink a cup.
16.
You _______ report the incident to the authorities immediately.
Correct Answer
C. Must
Explanation
"Must" indicates a strong obligation or necessity. In this context, it implies that reporting the incident is not merely an option but a requirement, likely due to legal or ethical reasons. "Can" suggests ability, "might" implies possibility, and "could" indicates a less forceful suggestion or a conditional ability, none of which convey the mandatory nature of reporting the incident.
17.
He _______ swim across the lake when he was younger.
Correct Answer
B. Could
Explanation
"Could" is the past tense form of "can" and is used here to reflect on past abilities or capabilities. It suggests that the subject had the ability to swim across the lake during his younger years but does not necessarily imply that he can still perform this action now. This usage is appropriate for discussing abilities in a past context, offering a nostalgic reflection on what was once possible, contrasting with present abilities which might have changed over time.
18.
You _______ try the cheesecake; it’s excellent here.
Correct Answer
C. Should
Explanation
The modal verb "should" is often used to make recommendations or give advice in a way that is less forceful and more suggestive, making it perfect for conveying polite suggestions. In this context, recommending the cheesecake is done in a friendly and advisory tone, using "should" to subtly suggest the action without making it sound like an obligation. This gentle nudge allows the speaker to share a personal opinion or experience while leaving room for the listener to decide, maintaining a polite and considerate interaction.
19.
It _______ rain later this evening according to the weather forecast.
Correct Answer
A. Might
Explanation
"Might" is typically used to express uncertainty or possibility, particularly about future events. In this sentence, "might" introduces the potential for rain as predicted by the weather forecast, acknowledging that while the forecast suggests rain is possible, it is not guaranteed. The choice of "might" here reflects the inherent uncertainty of weather predictions, allowing for a cautious approach to discussing future conditions without committing to a definitive outcome. This modal verb is ideal for discussing probabilities where outcomes are not certain, making it the best fit for the given sentence.
20.
Which sentence correctly uses "should" to express advice?
Correct Answer
B. You should exercise regularly.
Explanation
"Should" is used to give advice or suggest something as a good idea. It is followed by the base form of the verb without "to" or any other auxiliary. "You should exercise" correctly conveys that exercising regularly is recommended. The other options are incorrect because "should" is never followed by "to" or a gerund like "exercising." "Should have exercised" refers to a past recommendation, which changes the meaning of the sentence.