15.-Mum, can I go to the movies today? -Sure, but you finish your schoolwork first. A.can B.can’t C.must D.needn’t 查看更多

 

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-Mum, can I go to the movies today?

-Sure, but you ________ finish your schoolwork first.

[  ]

A.can

B.can't

C.must

D.needn't

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