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 on. [ ]

A. to have played

B. to play

C. to be played

D. to be playing

居民营养与健康综合信息调查表主要包括个人基本信息、健康状况信息、家庭遗传信息、生活信息。( )