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题目
题型:安徽省模拟题难度:来源:
Earth is believed ______ by an object the size of Mars at some point in the distant past before its
surface cooled. [     ]

A. to be hit
B. to have hit
C. to have been hit
D. to hit

答案
C
核心考点
试题【Earth is believed ______ by an object the size of Mars at some point in the dist】;主要考察你对不定式等知识点的理解。[详细]
举一反三
Do let your mother know all the truth. She appears ________ everything.A. to tell  
B. to be told
C. to be telling  
D. to have been told
题型:同步题难度:| 查看答案
Tom was very glad          to attend the ceremony. [     ]
A. being allowed      
B. to have been allowed
C. having allowed  
D. to have allowed
题型:甘肃省期中题难度:| 查看答案
I would love ________ to the party last night, but I had to work extra hours to finish a report. [     ]
A. to go
B. to have gone
C. going
D. having gone
题型:浙江省期末题难度:| 查看答案
The Great Pyramid is said to ________by aliens. Is there a chance that this might be true?  [      ]
A. be built      
B. have been built
C. being built        
D. built
题型:江苏同步题难度:| 查看答案
— I"m tembly sorry; but I seem       a hole in the rug.  
— Oh, that"s all right.  [     ]
A. burn         
B. to burn  
C. to have burn   
D. to be burning
题型:同步题难度:| 查看答案
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