Is it the fact ____ he hasn’t turned in his research report?A．whetherB．thatC．whi_刷题宝

题干

Is it the fact ____ he hasn’t turned in his research report?

A．whether

B．that

C．which

D．why

上一题下一题 0.64难度单项选择更新时间:2012-05-18 08:45:47

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