—Where did you find our chemistry teacher?—It was in the lab ______ he was doing

题干

—Where did you find our chemistry teacher?
—It was in the lab ______ he was doing his experiment.

A．that

B．where

C．which

D．in which

上一题下一题 0.64难度单项选择更新时间:2017-02-07 04:31:35

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