题目内容

He _____ have gone to Shanghai, for I saw him a moment ago.
A．mustB．can’tC．mustn’tD．can
B

试题分析：考查情态动词；句意：他不可能去上海了，因为我刚刚看见他了。can’t have done过去不可能做了，A must have done过去一定做了， C mustn’t不和have done连用， D can和have done表示推测，连用一般用否定和疑问句，选B。
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