—Must we clean the classroom at once?—No, you . You can clean it after s
题型：不详难度：来源：
—Must we clean the classroom at once?
—No, you . You can clean it after school.
A. needn’t B. mustn’t C. must |
答案
| A |
解析
试题分析：句意：—我必须立刻打扫教室吗？—不，你不必。你可以放学后打扫。根据题干分析，以must开头的一般疑问句，否定回答要用needn’t，意思是“不必”，故选A。 |
举一反三
-----Look !Sue is over there.
----That _________be her .She is in Canada now.
A .mustn’t B. can’t C. needn’t |
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—It _______ be rainy, cloudy or sunny. Who knows?| A．must | B．might | | C．shall | D．should |
|
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A. might B. can"t C. needn"t |
--- Whose backpack is this?
--- It be Mary’s. She is looking for hers. |
— ____ you sing the English song?
— Yes, I can. |
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