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  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1047

It was in the lab _______was taken charge of by Professor Harris ________they did the experiment.

A.which;that
B.that;what
C.whom;that
D.which;where
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Itwasinthelabwastakenchargeofb