Then I have learned there are a lot of troubles in our lives, but the problem is they control you or you control them.
A. why
B. whether
C. that
D. what
网友回答
A. why
(答案→)B. whether
C. that
D. what
解析：考查名词性从句。句中whether引导表语从句，whether… or…表示“是……还是……”。句意：但问题是是他们控制你还是你控制他们。