who helped Mum wash the dishes yesterday?Helen().A.washed B.helped C.did D.was

分类: 作业答案 • 2022-04-14 18:13:36

问题描述：

答

who helped Mum wash the dishes yesterday?
Helen().
A.washed B.helped C.did D.was

C

答

C.did
did是助动词，代替前文的helped
不能选B，因为helped时及物动词，后面没有宾语。

答

C
did即helped.但选B有重复之嫌.英语讨厌重复.
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