- I play computer,Mum? -No, you do your homework first. ;may not B.May;needn’t C.May;must D.Must;couldn’t 查看更多

 

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—_____ I play computer, Mum?
—No, you _____ do your homework first.  
[     ]
A.  Can; may not  
B.  May; needn't    
C.  May; must    
D.  Must; couldn't

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