—Why does the lake smell terrible? —Because large quantities of water _____. A．have polluted. B．is b...
2022-12-26 10:11:33 151次 2012-2013学年四川省高二上学期期中考试英语试卷（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．has been polluted.
|
D．have been polluted.
|
本题链接：
