问题

Too much pressure from study leads to sleeplessness,which _______ increases the risk of forgetfulness.

A:in turn
B:in return
C:by chance
D:by choice

正确答案是：

同类题型

The young man was modest and worked hard，and gradually managed to________his status.

16．He is heavily ____ now, so he can’t pay for a new house

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He feels lonely because he has no close friends ____.

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