11、I don’t think I ____ you in that dress before.
A．have seen    
B．was seeing   
C．saw    
D．see

12、Shelly had prepared carefully for her English examination so that she could be sure of passing it on her first _____.
A．intention
B．attempt  
C．purpose 
D．desire

13、In the United States, there is always ____ flow of people to areas of ___ country where more jobs can be found.
A．a; the
B．the ; a
C．the; the
D．a; a

14、I suggested the person _____ to be put into prison
A．refers    
B．referring   
C．referred    
D．refer

15、Have you found the answer to the question ______I asked you this morning?
A．when                 
B．what                       
C．that
16、To their surprise, the T-shirts with Olympic Mascots on them ____ sold out in one another.
A．are     
B．were     
C．have

17、Walking briskly for thirty minutes will burn as many calories as__________.
A．to run for fifteen minutes        
B．running for fifteen minutes
C．you run for fifteen minutes       
D．fifteen minutes walking

18、An old friend of my sister’s always helps my brother and______ with English.
A．I; our         
B．me; ourselves      
C．I; my        
D．me; our 

补全对话
19、What will be the population of the world by the end of the _______ （二十） century？

20、About _______ （一半） of his books are in English.

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