Sometimes I was thinking about _______ my own how I could make friends with a man who had little _______ common with me.?

A. with; in        B. in; in      C. on; on   D. on; in?

Sometimes I was thinking about ________ my own how I could make friends with a man who had little ________ common with me．

1. A.
   with; in
2. B.
   in; in
3. C.
   on; on
4. D.
   on; in