I don't have eraser. She one. A a; has B. a; have C. an; has D .an; have 查看更多

 

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—Excuse me , Have you got an eraser?
—Sorry, I haven't.  Why _____ you ask Mary? Perhaps she has one.
[     ]
A.  do    
B.  don't  
C.  did    
D.  didn't

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