The room is in a terrible mess; it ______ cleaned.A、can’t have beenB、mustn’t ha

游客2024-01-15 51

问题 The room is in a terrible mess; it ______ cleaned.

选项 A、can’t have been
B、mustn’t have been
C、shouldn’t have been
D、wouldn’t have been

答案 A

解析表示否定推测要用can’t。房间里一团糟，不可能被打扫过。

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