题目内容
【题目】My sister met him at the Central Grand Theatre yesterday afternoon, so he __________ your lecture.
A. couldn't attend B. mustn't have attended
C. shouldn't attend D. couldn't have attended
【答案】D
【解析】根据so前的分句可知,第二个分句是对过去事情的否定推测,故用couldn't have done形式。句意:我姐姐昨天下午在中央大剧院遇见他了,所以他不可能去听了你的讲座。
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