In shanghai many tall buildings have been put up ___ there used to be poor old houses.
问题描述：
In shanghai many tall buildings have been put up ___ there used to be poor old houses.
A.that B.where C.which D.when
Which one?why?
答
B.where
注意后面引导的句子,开头是“ there used to be ”,明显指地点,因此用where