Question

--Do you remember there _____ a river here? 

--Of course, I often swam in it when I was young.

1. A.
   used to being
2. B.
   used to be
3. C.
   was used to be
4. D.
   was used to being

Answer 1

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。