After the war, a new school building was put up there had once been a theatre.
A. that
B. where
C. which
D. in which
网友回答
A. that
(答案→)B. where
C. which
D. in which
解析：考察关系代词和关系副词用法,四个选项分别表示那个,哪里,哪一个和在哪一个里面,根据后面从句内容there had once been a theatre.作先行词”a new school building一所新学校”的定语,可知选B.