[单选题] The room is in a terrible dirty surroundings; it _____

[单选题][单选题] The room is in a terrible dirty surroundings; it ______ cleaned.

Acan’t have been

Bshouldn’t have been

Cmustn’t，have been

Dwouldn’t have been

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参考答案

试题答案：

A

答案解释：

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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