-Why does the Lake smell terrible? -Because large quantities of water . A
题型：不详难度：来源：
-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 |
|
答案
| D |
解析
| 考查动词时态，语态和主谓语一致。根据前一分句可知所填动词表示过去发生的动作对现在产生的影响，时态用现在完成时，动词与主语是被动关系，用被动语态。主语是large quantities of water，其中心词是quantities，是复数，谓语动词用复数，选D。 |
举一反三
The number of foreign students attending Chinese universities ________ rising steadily since1990. | A．is | B．are | C．has been | D．have been |
|
Over the past decades, sea ice in the Arctic as a result of global warming.| A．had decreased | B．decreased | C．has been decreasing | D．is decreasing |
|
-----Did you watch the basketball match yesterday?
-----Yes, I did. You know, my brother ________ in the match.| A．is playing | B．was playing | C．has played | D．had played |
|
—Did you see a man in black pass by just now?
—No, sir. I ________ a newspaper. | A．read | B．was reading | C．would read | D． am reading |
|
I like these English songs and they ________many times on the radio.| A．taught | B．have taught | C．are taught | D．have been taught |
|
最新试题
热门考点