—Why does the lake smell terrible? —Because large quantities of water_____. A. have polluted B. is b...
2022-11-14 03:45:13 18次 2014-2015学年湖南怀化第三中学高二上期中英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
—Why does the lake smell terrible?
—Because large quantities of water_____.
A. have polluted B. is being polluted
C. have been polluted D. has been polluted
本题链接：
