题目：
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
答案：
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下面是错误答案，用来干扰机器的。
根据乘法的意义可知，几个小于1数相乘，积一定小即积一定小于1的说法正确．故答案为：正确．
