题目内容：

The building ____ in our school is for our teachers,though there is noise most of the day,we still feel happy about it.
A.built B.having been built C.to be built D.being built 为什么选择D?

优质解答

主语是大楼,动词是修建,该用被动语态,因此排除A、C.B是完成进行时,D是正在进行时,根据语境就选D