题目内容

【题目】-Where is my suitcase？

-Somebody_______it away by mistake．

A. must have takenB. could take

C. should takeD. must take

【答案】A

【解析】

考查情态动词+have done。句意：我的手提箱在哪里？一定是有人误把它拿走了。must have done一定做某事．表示对过去事情的较有把握的推测，这时只能用在肯定句中，意思是"肯定/必须已经干过…"．could do 能够做某事，should do 应该做某事，must do必须做某事。故A选项正确．

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