( ) ---- Can you sing this English song? ---- Of course, ,I can. It many times on the radio. A. taught B. has taught C. is taught D. has been taught 查看更多

 

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-Can you sing this English song?
-Of course ,I can. It          many times on the radio.

[     ]

A. taught 
B. has taught
C. is taught 
D. has been taught

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