问题
选择题
a lot of trees in this area, but now we can see a museum instead.
A．There used to have
B．There used to be
C．There used to having
D．There used to being
答案
答案：B
此题重点考查be used to doing sth和used to do sth 两个句型结构的区别和意义。前者是习惯做某事，后者表示过去常常做某事，现在不做了。