Question

I _______ have problems ________ English, but I can do it well now.

1. A.
   was used to; to speak
2. B.
   used to; speaking
3. C.
   was used to; speaking
4. D.
   used to; to speak

Answer 1

B
used to do sth.是“曾经/以前做过某事”，而be sued to doing是“习惯于做某事”，后面则是have trouble/problems/difficulty(in) doing sth.，其中in省略了．所以选B．