问题:
It is in this laboratory ______ is run by Mr. Wu ______ the experiments are done.
A.which; that
B.that; which
C.where; that
D.that; where
It is in this laboratory ______ is run by Mr. Wu ______ the experiments are done.
A.which; that | B.that; which | C.where; that | D.that; where |
参考答案: