Pollution is a serious problem. Scientists will _______ some good ways to save it. A. come up with B...
2023-01-03 08:41:58 114次 2014-2015学年山东东平县斑鸠店中学八年级下第一次月考英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
Pollution is a serious problem. Scientists will _______ some good ways to save it.
A. come up with B. come on
C. come out D. come up
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