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The room is in terrible mess; it cleaned. [ ] A.can’t have been B.shouldn’t have

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The room is in terrible mess; it cleaned. [ ] A.can’t have been B.shouldn’t have

The room is in terrible mess; it ________ cleaned.

[]

A.can’t have been

B.shouldn’t have been

C.mustn’t have been

D.wouldn’t have been

试题答案

答案:A