自考365为考生们精心整理了学位英语/成人英语三级“每日一练”习题（2017年4月21日），欢迎积极参与学习！更多精彩信息，请关注本站。

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）to play C）to be played D）to be playing