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He___ have attended the meeting this morning. He has been staying at my home for a whole day.
A．can’tB．mustn’tC．shouldn’tD．needn’t
A
考查情態(tài)動詞+have done的用法。句意“他不可能已經參加了今上午的會議。他在我家待了一整天�！边@里表示否定的推測，can’t have done“不可能已經做了某事”；mustn’t“禁止”，不表示否定推測。shouldn’t have done“本不該做某事卻做了”；needn’t have done“本不必做某事卻做了”。故選A。
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