【題目】He ________ without saying goodbye to them, for he always has good manners.

A. can’t have left B. may not have left

C. shouldn’t have left D. mustn’t have left

【答案】A

【解析】

試題分析： A考查情態(tài)動(dòng)詞表猜測(cè)，解本題一定要注意審題，要把題目看完整，才不會(huì)想當(dāng)然選C，根據(jù)后文的for he always has good manners可以斷定“他不可能不打招呼就離開(kāi)”，用can’t have left，所以答案是A。

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