It is in this laboratory ______ is run by Mr. Wu ______ the experiments are done

题干

It is in this laboratory ______ is run by Mr. Wu ______ the experiments are done.

A．which; that

B．that; which

C．where; that

D．that; where

上一题下一题 0.64难度单项选择更新时间:2013-01-04 08:40:51

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