问题描述：
Nobody knows_____为什么选where he works
Nobody knows_____.(B)
A.where does he work B.where he works
C.where did he work D.where his work
为什么选B 要知道为什么不选其他的
Nobody knows_____.(B)
A.where does he work B.where he works
C.where did he work D.where his work
为什么选B 要知道为什么不选其他的
问题解答：
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