As students, ____ we have made full use of our time to study, there’s still roo

题干

As students, ____ we have made full use of our time to study, there’s still room for improvement.

A．how

B．which

C．while

D．as

上一题下一题 0.85难度单项选择更新时间:2016-03-29 02:16:58

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