What he has learned through practice before him a lot in his future work.A. helpingB. hel

发布时间：2020-08-14 23:46:18

What he has learned through practice before      him a lot in his future work. 
A. helping
B. helped
C. it helps
D. will help

网友回答

A. helping
B. helped
C. it helps
(答案→)D. will help
解析：before这里是副词,不是介词,也不是连词,所填词实际是谓语动词.
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