校长说that a new teaching-building is going to be built next year __can hold another 1200 students

问题描述:

校长说that a new teaching-building is going to be built next year __can hold another 1200 students
A.when B.what C.which D.where 解释下选什么

C 前边句子成分完整,不缺介词.
不完整时一般用where
where=介词+which
比如:the new teaching-building where(in which)we study is beautiful.