穿越时空的连续剧:单项填空

来源：百度文库 编辑：神马品牌网 时间：2024/05/11 19:07:45
It was in the lab ( ) was taken charge of by Professor Black ( )
they did the experiment.
a that where b which that c when that d which where

A that 强调、where做地点状语从句.

A,it was......that.......是强调句.

a

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