What’s that high building ?
we borrow books or do reading．
A. It’s the building from which
B. That’s where
C. The building where
D. It’s in which
网友回答
A. It’s the building from which
(答案→)B. That’s where
C. The building where
D. It’s in which
解析：考查定语从句。“那栋很高的建筑物是干什么用的？”“那是我们借书和看书的地方。”borrow与from连用，但read不与from连用，排除A；B项正确；C项缺少主语；D项缺少表语。故选B。