So fast ________ that I could not catch up with them.A．did they runB．they had r_刷题宝

题干

So fast ________ that I could not catch up with them.

A．did they run

B．they had run

C．they ran

D．had they run

上一题下一题 0.85难度单项选择更新时间:2013-06-19 03:33:31

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