摘要： It was in the lab was taken charge of by Professor Black they did the experiment. A. that; where B. which; that C. whom; that D. which; where
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It was in the lab ________ was taken charge of by Professor Black ________ they did the experiment．
[ ]
A．that; where
B．which; that
C．whom; that
D．which; where
It was in the lab ________ was taken charge of by professor Black ________ they did the experiment．
[ ]
A．that; where
B．which; that
C．whom; that
D．which; where
It was in
the lab ________ was taken charge of by professor Black ________ they did the
experiment.
A．that; were
B．which; that
C．whom; that
D．which; where
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