I like hiking in the forest because the air is pretty ______. A. free B. dirty C. polluted D. fresh
2022-11-28 04:21:19 68次 2016年初中毕业升学考试（山东青岛卷）英语（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
I like hiking in the forest because the air is pretty ______.
A. free B. dirty C. polluted D. fresh
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