题目内容
They are thinking of ways ________ pollution ________ happily.
[ ]
A.of preventing , to live
B.to prevent , living
C.to prevent, to living
D.prevent, live
答案:A
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题目内容
They are thinking of ways ________ pollution ________ happily.
[ ]
A.of preventing , to live
B.to prevent , living
C.to prevent, to living
D.prevent, live