It was not until he became very ill ______ he went to see a doctor.A．whatB．thatC_刷题宝

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It was not until he became very ill ______ he went to see a doctor.

A．what

B．that

C．when

D．then

上一题下一题 0.85难度单项选择更新时间:2011-04-13 02:53:11

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