A new college is being built in I can remember was an old factory 20 years ago．
A. which
B. where
C. that
D. what
网友回答
A. which
B. where
C. that
(答案→)D. what
解析：考查宾语从句，介词in后面接的是宾语从句，宾语从句中缺少主语，I can remember是插入语，what可以做宾语从句的主宾表，句意是：一所新大学正在我记得20年前是个旧工厂的地方被建。选D。