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题型：单选题题类：常考题难易度：普通

As everyone knows, rubbish everywhere.

A . need be thrown B . mustn't be thrown C . can't throw

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组卷次数：71次 +选题

举一反三

——May I put my bag here?
——No, you________. You should put it up on the shelf

She be here．I saw her come in．

I have travelled a lot. I ________ speak four languages.

— Listen! I think it be Cindy having a speech in the hall.

— No. It be her. She left for Shanghai yesterday.

—Can't you stay a little longer?

—It's getting late I go now. My daughter is home alone。

—Can you swim?

—_______

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