—Why does the lake smell terrible? —Because large quantities of water______. A．have polluted B．is be...
2022-12-23 04:02:50 30次 2013届辽宁省五校协作体高三上学期期中考试英语试卷 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：
