Your friends were all worried about _______ you were sick.A．thatB．whichC．whatD．t_刷题宝

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Your friends were all worried about _______ you were sick.

A．that

B．which

C．what

D．the fact that

上一题下一题 0.64难度单项选择更新时间:2013-05-24 09:25:05

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