这题为什么选which而不是where

问题描述:

这题为什么选which而不是where
— Where did they fi nish the experiment?
— It was in the lab _______ was taken charge of by Prof.Smith.
A.where B./ C.which D.in which

这里指的是 Smith 教授掌管的实验室,不是指的某个地方,所以用 Which.