Only when finished his own work ask him to help you.A. has he can youB. he has can youC

问题补充：

Only when finished his own work, ask him to help you.

A. has he, can you

B. he has, can you

C. has he, you can

D. he has, you can

答案：

A. has he, can you

(答案→)B. he has, can you

C. has he, you can

D. he has, you can

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