题目内容
It was in the lab ___was taken charge of by Mr. Harris ____they did the experiment.
A. which,that B. that,which C. that,whom D. which,where
A.
解析:第一空为定语从句的引导词部分,既可以使用that又可以使用which,第二空为强调句型部分,应用that,被强调部分为in the lab.
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