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题型：单选题题类：常考题难易度：普通

–– ________ I come back before 6 o'clock?
–– No, you _______ . But you ______ be back later than 7 o'clock.

A、Need; must; must B、May; mustn't; can't C、Can; can't; can't D、Must; needn't; can't

举一反三

一 I must finish the work before I leave.

一 Please tell me if you need my help.

Sir, you ______use your mobile phone at the gas station. It's very dangerous.

Yang Jiang _____ be the boy's favorite writer. He has written a lot to praise her.

You ________ be quiet when you are in the library.

—I argued(争吵) with my best friend today. What ________ I do?

—I think you can call her to say sorry.

It's nearly eight o' clock. Bruce ___be here at any moment

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