She will tell us why she feels so strongly that each of us has a role ________ in making the earth a better place to live．

1. A.
   to have played
2. B.
   to play
3. C.
   to be played
4. D.
   to be playing

She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.

She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.

A. to have played??? B. played??? C. playing??? D. to play

She will tell us why she feels so strongly that each of us has a role _____ in making the earth a better place to live.

.She will tell us why she feels so strongly that each of us has a role ______ in making the earth a better place to live.