问题
选择题
It was in the lab which was taken charge of by Professor Zhang _____ they did the experiment. [ ]
A. who
B. where
C. where
D. that
答案
答案：D
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It was in the lab which was taken charge of by Professor Zhang _____ they did the experiment. [ ]
A. who
B. where
C. where
D. that
答案：D