题目内容
If people know more about pollution(污染), _______ they will do something ______.
A.May be; helping B.May be; to help C.Maybe; helping D.Maybe; to help
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题目内容
If people know more about pollution(污染), _______ they will do something ______.
A.May be; helping B.May be; to help C.Maybe; helping D.Maybe; to help