—Why does the lake smell terrible?—Because large quantities of water           

—Why does the lake smell terrible?—Because large quantities of water           

题型:不详难度:来源:
—Why does the lake smell terrible?
—Because large quantities of water           .
A.have pollutedB.is being pollutedC.has been pollutedD.have been polluted

答案
D
解析
考查主谓一致及时态。large quantities of +不可数名词,谓语动词用单数,根据句意用现在完成时。句意:——为什么这湖这么难闻?——因为大量的水已经被污染了。
举一反三

--Can I give you a call on Sunday?
-- Sure, but I _______ to the mountains, so call me on my cell phone.
A.is drivingB.droveC.have been driving droveD.will be driving

题型:不详难度:| 查看答案

---Are you happy about your present job?
--- Why shouldn’t I ? I _____ as much , and I enjoy more.
A.am earningB.earn
C.earnedD.have earned

题型:不详难度:| 查看答案
At the end of the meeting, it was announced that an agreement ______. 
A.has been reachedB.had been reachedC.has reachedD.had reached

题型:不详难度:| 查看答案
Materials of this kind ____ once ____ on the wall.
A.don’t wash, paintedB.don’t wash, painting
C.aren’t washed, paintedD.aren’t washed, painting

题型:不详难度:| 查看答案

The car ran down the hill, and the driver _____, according to the newspaper, to have been killed.
A.saidB.was sayingC.was saidD.had been said

题型:不详难度:| 查看答案
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