28. The reason for his success is he worked very hard.A. whyB. thatC. whetherD. How

发布时间：2020-08-16 06:33:37


28. The reason for his success is      he worked very hard.
A. why
B. that
C. whether
D. How

网友回答

A. why
(答案→)B. that
C. whether
D. How
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