Sure! Here are the interpretations of each question from the provided text along with the explanations of the answer choices:

### Question 10:
**Sentence:** As a child, my son ___ such vegetables as cabbages and leeks; nonetheless, he can't even bear the sight of them any longer.

- A. did not eat
- B. was eating
- C. had eaten
- D. would eat

**Correct Answer:** A. did not eat
**Explanation:** This option indicates a simple past action that didn’t occur, fitting the context of the child having a previous aversion to certain vegetables.

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### Question 11:
**Sentence:** The company had sent the advertisements to the newspaper before they realized they’d ___ the salary they were offering for the position.

- A. could have asked
- B. must have asked
- C. were able to ask
- D. might have asked

**Correct Answer:** B. must have asked
**Explanation:** This suggests a strong assumption that the company had indeed asked for a correction regarding the advertised salary.

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### Question 12:
**Sentence:** I think ___ the battery before going to Vienna. Do you know Lucy had problems starting the car last night?

- A. you’d better change
- B. you’d better changed
- C. you’ve better changed
- D. you’d better change

**Correct Answer:** D. you’d better change
**Explanation:** This form is grammatically correct and suggests that it’s advisable to change the battery.

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### Question 13:
**Sentence:** He ___ on the last day of the congress so his presence at the opening ceremony was something of a surprise.

- A. must have joined
- B. was to join
- C. had to join
- D. should join

**Correct Answer:** B. was to join
**Explanation:** This indicates an intended action that didn’t take place, fitting the context of surprise.

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### Question 14:
**Sentence:** It’s absurd! In the first section they are preventing a "major epidemic" and in the next one they write that ___ so many people.

- A. a man’s had vaccinated
- B. doesn’t need to be vaccinated
- C. didn’t need vaccinated
- D. mustn’t have vaccinated

**Correct Answer:** B. doesn’t need to be vaccinated
**Explanation:** This suggests a contradiction, making it absurd, highlighted by the context.

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### Question 15:
**Sentence:** If we view the side, we should not take things for granted and should be able to cope with all kinds of contingencies, in Salta, for instance, the villagers ___ for accommodation.

- A. must have been unprepared
- B. may be unprepared
- C. cannot have been prepared
- D. must not be prepared

**Correct Answer:** A. must have been unprepared
**Explanation:** This indicates a strong certainty about their past level of preparedness.

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### Question 16:
**Sentence:** I must take my umbrella—“No, you ___ it’s not going to rain.”

- A. have to
- B. can’t
- C. needn’t
- D. don’t

**Correct Answer:** D. don’t
**Explanation:** This negates the need for an umbrella based on a belief that it won't rain.

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### Question 17:
**Sentence:** I wish I hadn’t criticised Mark’s drawing yesterday because he hasn’t spoken to me since. Do you think he’ll come to my party on Friday? Possibly, or he ___ by then.

- A. may be coming
- B. was able to forgive
- C. might have forgiven
- D. might have asked

**Correct Answer:** C. might have forgiven
**Explanation:** This expresses a possibility regarding a past action affecting the present situation.

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### Question 18:
**Sentence:** In fact, the criminal ___ because the front door was wide open and...

- A. didn’t break
- B. didn’t need broke
- C. hasn’t needed to break
- D. didn’t break

**Correct Answer:** D. didn’t break
**Explanation:** This indicates that the action of breaking in was unnecessary.

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### Question 19:
**Sentence:** I didn’t walk and if the meeting ___ end earlier I'd rather you...

- A. didn’t walk
- B. won’t walk
- C. didn’t walk
- D. don’t walk

**Correct Answer:** C. didn’t walk
**Explanation:** This maintains a conditional past structure, referencing the hypothetical situation of the meeting ending early.

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