A modern teaching building has been set up in was a wasteland ten years ago.
A. what
B. which
C. that
D. where
网友回答
(答案→)A. what
B. which
C. that
D. where
解析：句意：一座现代化的教学楼在10年前的废墟的地方被建成。介词in后面是宾语从句，宾语从句中没有主语，用what连接宾语从句，that连接宾语从句的时候，只起到连接作用，不做成分，which哪个，where哪里，都不符合句意，选A。