The room is in a terrible dirty surroundings: it______cleaned.

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问题 The room is in a terrible dirty surroundings: it______cleaned.

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

答案A

解析 句意:房间乱极了,不可能打扫过。句子前半部分“房间乱极了”是前提,后半部分应该是对这种情况做出的一种猜测性判断,且带否定意味,应用否定形式can’t have done,表示不可能做某事。shouldn’t have done意为本不应该打扫,而实际上已经打扫过了,与句意不符。
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