1.
I ... about the neighbours making noise before.
Correct Answer
D. Have complained
Explanation
The correct answer is "have complained". This is because the sentence is in the present perfect tense, which is used to talk about an action that started in the past and is still relevant in the present. The word "have" is the correct form of the auxiliary verb to match the subject "I". "Complained" is the past participle form of the verb "complain". Therefore, "have complained" is the correct form to indicate that the speaker has previously made complaints about the neighbors making noise.
2.
I ... my hands so I can help you with cooking.
Correct Answer
A. Have washed
Explanation
The correct answer is "have washed" because the sentence is in the present perfect tense, which is used to describe an action that started in the past and has a connection to the present. In this case, the speaker is saying that they have already washed their hands in the past, and as a result, they are now able to help with cooking.
3.
Do you know how many people ... on the moon?
Correct Answer
B. Have walked
Explanation
The correct answer is "have walked." This is because the question is asking about the number of people who have performed the action of walking on the moon. "Have walked" is the present perfect tense, which is used to talk about past actions that are connected to the present. In this case, it implies that there have been people who walked on the moon at some point in the past, and this action is relevant to the present.
4.
The Earth ... about 5 million years ago
Correct Answer
D. Was formed
Explanation
The correct answer is "was formed." This is because the sentence is referring to an event that happened in the past, specifically the formation of the Earth. Therefore, the past tense verb "was formed" is the most appropriate choice.
5.
Iwona ... to carry on with the course even though it was very difficult.
Correct Answer
C. Decided
Explanation
The correct answer is "decided". This is because the sentence is in the past tense and refers to a specific action that happened in the past. "Decided" is the past tense form of the verb "decide" and fits grammatically and contextually in the sentence.
6.
My brother ... into town to buy some new shoes.
Correct Answer
C. Has gone
Explanation
The correct answer is "has gone". This is because the sentence is in the present perfect tense, indicating an action that started in the past and is still ongoing or has just been completed. "Has gone" is the correct form of the verb "to go" in the present perfect tense.
7.
Mira ... with her friends for three weeks now.
Correct Answer
C. Has stayed
Explanation
The phrase "for three weeks now" indicates that the action of staying with her friends started in the past and is still ongoing. Therefore, the correct verb tense to use is the present perfect tense, which is formed by combining "has" (for third person singular subjects like Mira) with the past participle of the verb "stay." Hence, the correct answer is "has stayed."
8.
My friend's daughter ... such a lot since we last saw her.
Correct Answer
C. Has grown
Explanation
The correct answer is "has grown." This is because the sentence is in the present perfect tense, which is used to talk about an action that started in the past and is still ongoing or has just been completed. "Has grown" is the correct form of the verb "to grow" in the present perfect tense.
9.
The house prices ...dramatically in recent years.
Correct Answer
C. Have fallen
Explanation
The correct answer is "have fallen" because the sentence is in the present perfect tense and refers to an action that started in the past and is still ongoing. "Have fallen" is the correct form of the verb "fall" in the present perfect tense.
10.
I ... to find out that she still was single
Correct Answer
B. Was surprised
Explanation
The correct answer is "was surprised". This is because the sentence is in the past tense and the subject "I" is the one who experienced the surprise. Therefore, the correct verb form to use is "was surprised".