“It's at this college ________ your father studied ________ he was young”, said the mother.

“It's at this college ________ your father studied ________ he was young”, said the mother.

A.which, when

B.that, when

C.where, that

D./, that

答案及解析： B

解析：

导解：that与前面It's…构成强调句型，when引导一个状语从句．