We should try not to use too much because it costs very much and will run out in the future. A.wind B. water C. coal D. the sun 题目和参考答案——青夏教育精英家教网—

题目内容

We should try not to use ______ too much because it costs very much and will run out in the future.

A.wind B. water C. coal D. the sun

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