—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】

試題分析：考查情態(tài)動詞和虛擬語氣。句意：噢，天吶！我的英語書不見了。--你一定是把它遺留在家里了。情態(tài)動詞+have done，表示對過去的事情進行虛擬，A本應(yīng)該做某事；C一定已經(jīng)做了某事；D本可以做某事，根據(jù)句意可知，這里表示肯定推測，用must have done，故選C。

考點：考查情態(tài)動詞和虛擬語氣

 

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