It remains to be seen ____ he will solve the problem or not. A．thatB．whatC．which_刷题宝

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It remains to be seen ____ he will solve the problem or not.

A．that

B．what

C．which

D．whether

上一题下一题 0.85难度单项选择更新时间:2012-10-23 02:15:55

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