The room is in a terrible mess; it ______________________(一定没打扫过).can’t have bee

游客2024-03-04  4

问题 The room is in a terrible mess; it ______________________(一定没打扫过).

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答案 can’t have been cleaned

解析 本题考查can’t have done表示对过去某事的否定猜测的用法。表达对过去某事的肯定猜测时,用must have done sth.的形式;而表达对过去某事的否定猜测时,要用can’t have done sth.的形式.房间应是“被打扫”,所以clean要用被动语态.
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