题目内容

My sister met him at the Grand Theater yesterday afternoon, so he _______ your lecture.
A.couldn’t have attendedB.needn’t have attended
C.mustn’t have attendedD.shouldn’t have attended
A
考察情态动词,couldn’t have attended不可能做了某事 needn’t have attended本不需要干某事
mustn’t have attended禁止干某事 shouldn’t have attended本不应当干某事
句意为,我的姐姐昨天下午在大剧院遇到了他,因此他不可能参加了你的讲座
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