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As a member of one world, each of us has a role _____ to make the earth a better place.
A.playingB.playC.playedD.to play
D

试题分析:句意:作为世界的一员,我们每个人都要发挥作用,使地球成为一个更好的地方。“have sth. to do” 意为“有某事要做”,play a role:发挥作用;扮演一个角色。这里要跟 have sth. done 使某事、物被…, 和have sb. do,使/让某人做某事区分开。故D正确。
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