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—Oh, my God! My English book is nowhere to be seen.

—You __________ it at home.

A. should have left B. would have left

C. must have left D. could have left

 

C

【解析】

试题分析:考查情态动词和虚拟语气。句意:噢,天呐!我的英语书不见了。--你一定是把它遗留在家里了。情态动词+have done,表示对过去的事情进行虚拟,A本应该做某事;C一定已经做了某事;D本可以做某事,根据句意可知,这里表示肯定推测,用must have done,故选C。

考点:考查情态动词和虚拟语气

 

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