. It is no good to come now. He is busy.A. if you ask himB. to ask himC. asking himD. tha

问题补充：

. It is no good to come now. He is busy.

A. if you ask him

B. to ask him

C. asking him

D. that you ask him

答案：

A. if you ask him

B. to ask him

(答案→)C. asking him

D. that you ask him

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