I couldn't do my homework with all that noise ．A. going onB. goes onC. went onD. to go on

问题补充：

I couldn do my homework with all that noise ．

A. going on

B. goes on

C. went on

D. to go on

答案：

(答案→)A. going on

B. goes on

C. went on

D. to go on

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