This is the second time I ________ the Himalayas as a college student.[     ]A.

This is the second time I ________ the Himalayas as a college student.[     ]A.

题型:同步题难度:来源:
This is the second time I ________ the Himalayas as a college student.[     ]
A. climb  
B. had climbed
C. climbed  
D. have climbed
答案
D
举一反三
The last few years ________ many disasters in and out of China, from earthquake to drought.[     ]
A. see  
B. are seeing
C. have seen  
D. saw
题型:同步题难度:| 查看答案
—Hello, John, how are you? Are you busy now?
—Not really. I ________ my report. And now I am watching an American movie on TV.[     ]
A. finished  
B. have finished
C. had finished  
D. have been finishing
题型:同步题难度:| 查看答案
Listening to loud music at rock concerts ________ caused hearing loss in some teenagers.[     ]
A. is  
B. are
C. has  
D. have
题型:同步题难度:| 查看答案
Such great progress ________ that the teachers are pleased with him.[    ]
A. he has made  
B. has he made
C. did he make  
D. made he
题型:同步题难度:| 查看答案
Every possible means ________ to prevent the air pollution, but the sky is still not clear. [     ]
A. is used  
B. are used
C. has been used  
D. have been used
题型:同步题难度:| 查看答案
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