This is a simple idea, but that is hard to put into practice.A．oneB．itC．t_刷题宝

题干

This is a simple idea, but that is hard to put into practice.

A．one

B．it

C．that

D．those

上一题下一题 0.64难度单项选择更新时间:2015-03-13 12:08:08

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