. He knows nothing about it, so he can’t help any of your work. A. doingB. to doC. being

发布时间：2020-08-16 07:21:04


. He knows nothing about it, so he can’t help      any of your work.
A. doing
B. to do
C. being doing
D. to be done

网友回答

(答案→)A. doing
B. to do
C. being doing
D. to be done
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