I don’t know the reason he’s come so late.A. /B. for whichC. whyD. all the above

发布时间：2020-08-17 13:48:22

I don’t know the reason      he’s e so late.
A. /
B. for which
C. why
D. all the above

网友回答

A. /
B. for which
C. why
(答案→)D. all the above
解析：reason后面定语从句的引导词是why，that，for which或不用引导词。
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