Question

Don’t you remember ________?

1. A.
   seeing the man before
2. B.
   to see the man before
3. C.
   saw the man before
4. D.
   to have seen the man before

Answer 1

A
解析：
句意为“你不记得你以前见过这个人了吗?”remember doing sth．“记得做过某事”；
remember to do sth．“记得去做某事”。