专升本考试

解析：The room is in a terrible dirty sur

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【单选题】The room is in a terrible dirty surroundings; it ______ cleaned.


A．can' t have been
B．shouldn' t have been
C．mustn't have been
D．wouldn' t have been


网考网参考答案：A
网考网解析：
本题测试情态动词+完成式。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一种猜测性判断，且带否定意味，应用否定形式can’t have been。shouldn’t have been意思为真不应该打扫，而实际上已经打扫过了，跟句意不符。 document.getElementById("warp").style.display="none"; document.getElementById("content").style.display="block"; 查看试题解析出处>>

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