--Why does the lake smell terrible?---Because...

—Why does the lake smell terrible?

—Because large quantities of water 　　　　　　　　　　　　　　　 .

A. have polluted　　 B. have been polluted

C. is being polluted 　 D. has been polluted

高二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

高二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

高二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

高二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

高二英语单项填空简单题查看答案及解析

—Why does the lake smell terrible?

—Because large quantities of water _____.

高二英语单项填空简单题查看答案及解析

—Why does the lake smell terrible?

—Because large quantities of water_____.

A. have polluted　　　　　　　　　 　　 B. is being polluted

C. have been polluted　 　　　　　　　 D. has been polluted

高二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

高二英语单项填空简单题查看答案及解析

--Why does the river smell terrible?

--Because large quantities of water__________.

高二英语单项填空困难题查看答案及解析

— Why is the chemical plant closed?

— Because large quantities of waste water ______ into the Yangtze River.

A. has been released    　　　 B. is being released

C. was released    　　　　　 D. have been released

高二英语单项填空中等难度题查看答案及解析