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题型:同步题难度:来源:
The flu is believed _____ by viruses that like to reproduce in the cells inside the human nose and throat.     [     ]
A. causing                      
B. being caused    
C. to be caused                  
D. to have caused
答案
C
核心考点
试题【The flu is believed _____ by viruses that like to reproduce in the cells inside 】;主要考察你对不定式等知识点的理解。[详细]
举一反三
The project________by the end of 2011 will expand the city"s cable TV network to cover more users. [     ]
A. being accomplished  
B. accomplished
C. to be accomplished  
D. having been accomplished
题型:陕西省同步题难度:| 查看答案
As the night is falling, a long queue stood at the bus stop, nervously expecting _______.    A. to pick up      
B. picking up      
C. to be picked up      
D. being picked up
题型:山东省模拟题难度:| 查看答案
It is important for the websites _______ regularly.[     ]
A. to be updated  
B. to have been updated  
C. to update    
D. to have updated
题型:广东省期中题难度:| 查看答案
Oil prices are ___________ to increase by less than 20% this year. [     ]
A.forecasting
B.forecast
C.to be forecasted
D.to be forecasting 
题型:同步题难度:| 查看答案
Mr Smith, ________with a new mayor, is giving his farewell speech at the meeting. [     ]
A. replaced  
B. to be replaced
C. to replace  
D. being replaced
题型:同步题难度:| 查看答案
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