题目内容

Charles Babbage is generally considered to _______ the first computer.
[     ]
A. to invent    
B. inventing    
C. to have invented   
D. having invented
C
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相关题目
— What made Alice so upset?
— _____.
[     ]
A. Peter's leaving without saying goodbye
B. Peter left without saying goodbye
C. Peter was leaving without saying goodbye
D. Peter had left without saying goodbye
According to a recent survey, children spent up to 25 hours a week _____ TV.

[     ]

A. to watch
B. to watching
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He's now used to ______ early. But he used to ______ late in the morning.
[     ]
A. getting up; sleep
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[     ]
A. to finish  
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  [      ]
A. be built      
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[     ]
A. to lose    
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