With the development of economy, China can compete _____ other countries _____ trade.（ ）

A. against; in　　 B. with; for　　　 C. against; for　　 D. in; for

He will compete ______ his old friends ______ the first place.

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

She will compete ________ the other applicants ________ the job offered by the famous company.

A. with; for 　　　 B. for; for 　　　　 C. against; in 　　 D. in; in