The reason for his success is _______ he worked very hard. A. why B. that C. whether D. how
2023-02-05 12:04:37 102次 20102011学年福建省宁德市三校高一下学期期中联考英语题 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
The reason for his success is _______
he worked very hard.
A. why B.
that C.
whether D. how
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