问题
选择题
Nowadays people sometimes separate their waste to make it easier for it _____. [ ]
A. reusing
B. reused
C. reuses
D. to be reused
答案
答案：D
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Nowadays people sometimes separate their waste to make it easier for it _____. [ ]
A. reusing
B. reused
C. reuses
D. to be reused
答案：D