After the war,a new school building was put up ____there had once been a theatre.

After the war,a new school building was put up / where there had once been a theatre.第一个小分句：状语：after the war战后主语：a new school building新学校大楼谓语：was put up被建立第二个小分句：there...我想问的是定语从句中怎么将a new school building 放进去there had once been a theatre at the new school building或there had once been a theatre in the place of a new school building......