--Do you remember there a river here?
--- Of course, I often swam in it when I was young.
A. used to being
B. used to be
C. was used to be
D. was used to being
网友回答
A. used to being
(答案→)B. used to be
C. was used to be
D. was used to being
解析：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。