问题
选择题
.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
答案
答案：B
考查非谓语动词。to play 的逻辑主语是 each of us,在主语和逻辑主语一致时,不定式和它所修饰的名词中心词存在动宾关系,不必用被动语态,排除C项,A,是完成式,表示动作在主语的动作之前,不合本题题义,D,进行式,也不对; 故选B.