More and more people have a low-carbon life and the air is getting much ________ than a few years ag...
2022-10-24 03:52:10 186次 2018年广东中考英语冲刺卷 单选题 反馈错误 加入收藏 正确率 : 100%
题目内容：
More and more people have a low-carbon life and the air is getting much ________ than a few years ago.
A. clean B. cleanest C. cleaner D. the cleanest
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