It was not until dark _____ he found _____ he thought was the correct way to sol

题干

It was not until dark _____ he found _____ he thought was the correct way to solve the problem.

A．that; that

B．that; what

C．when; what

D．when; that

上一题下一题 0.64难度单项选择更新时间:2013-03-24 09:27:51

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