【題目】-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】

考查情態(tài)動詞+have done。句意:我的手提箱在哪里?一定是有人誤把它拿走了。must have done一定做某事.表示對過去事情的較有把握的推測,這時只能用在肯定句中,意思是"肯定/必須已經(jīng)干過…"could do 能夠做某事,should do 應(yīng)該做某事,must do必須做某事。故A選項正確.

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