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题型：单选题题类：常考题难易度：困难

The room is in a terrible mess; it ____cleaned.

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

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组卷次数：46次 +选题

举一反三

--Talking loudly in a library is impolite.

--In fact, we should also take care not to cough or sneeze loudly in public.（找出与画线部分意思相同或相近的选项）

You'd better _______ the words in your dictionary.

Mary had to stay at home ________the bad weather.

—I have a cold. You are near the window._____ please close it?

—OK. You should look after yourself well.

As students, we must study hard. ______, we should care for our health.

My uncle ____ to work by bus, but now he ____ to work on foot.

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