― I’m sure John will win the first prize in the final.

― I think so. He           for it for months.

       A．is preparing                                                B．was preparing         

C．had been preparing                                      D．has been preparing

-----I’m sure John will win the first prize in the final.

-----I think so. He ____ for it for months.

A.is preparing　　　　 B.was preparing

C.had been preparing　 D. has been preparing

–I’m sure John ____ the first prize in the final.
–I think so. He ____ for it for months

1. A.
   will win; is preparing
2. B.
   would win; was preparing
3. C.
   would win; had been preparing
4. D.
   will win; has been preparing

–I’m sure John ____ the first prize in the final.
–I think so. He ____ for it for months.