It was not until dark _______________ he thought was the correct way to solve th

题干

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

A．did he find what	B．when he found that
C．that he found what	D．when he found what

上一题下一题 0.4难度单项选择更新时间:2018-11-07 04:15:10

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