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【题目】He __________present at the meeting this morning; he is on a business trip this week.

A. cant have been

B. mightnt have been

C. mustnt have been

D. neednt have been

【答案】A

【解析】考查情态动词。表示对过去的推测:情态动词+have done;该句句意:他不可能参加了今天早上的这个会议;他这一周在出差。表示把握很大的推测,故用A.

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