—Why does the river smell terrible—Because la...

－Why does the river smell terrible?

－Because large quantities of water______．

A. have been polluted                       B. is being polluted

C. has been polluted                  D. have polluted

高三英语单项填空中等难度题查看答案及解析

－Why does the river smell terrible?

－Because large quantities of water______．

A. have been polluted                       B. is being polluted

C. has been polluted                  D. have polluted

高三英语单项填空中等难度题查看答案及解析

—Why does the river smell terrible

—Because large quantities of water________．

A．have polluted　　　　　　　　　　　　　　　　 　 B．is being polluted

C．has been polluted　　　　　　　　　　　　　　　 D．have been polluted

高三英语单项填空中等难度题查看答案及解析

---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

高三英语单项填空中等难度题查看答案及解析

-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

高三英语单项填空中等难度题查看答案及解析

— 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

高三英语单项填空中等难度题查看答案及解析

—Why does the lake smell terrible?

—Because large quantities of water______.

高三英语单项填空困难题查看答案及解析

—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

高三英语单项填空中等难度题查看答案及解析

—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

高三英语单项填空中等难度题查看答案及解析

—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

高三英语单项填空中等难度题查看答案及解析