用适当的介词填空。
1. The students are listening ___   their teacher very carefully.
2.——I'm looking forward ____ taking a holiday in Hainan. 
   ——So am I.It's great to be ____ holiday there.
3. Sichuan is one of the largest provinces ____ China.  It's ____ the southwest ____ China.
4.——It's necessary ____ you to take exercise ____ the morning.  
   ——I agree ____ you. It's very kind ____ you to give me advice.
5. The moonlight comes in ____ the window and the room seems quiet and peaceful.
Do you go to work ______ your bicycle?
[     ]
A. in   
B. on     
C. at     
D. with
Many students memorize the new words _____ them many times.
[     ]
A. by repeating  
B. in reading  
C. to practise  
D. for writing
My friend won a prize _____ his essay about the importance of protecting the environment.
[     ]
A. about
B. for
C. of  
D. with
-What are you looking ______?  
-My watch. I can't find it now. Have you seen it anywhere?    
[     ]
A. up        
B. for        
C. out        
D. back
The Shanghai Expo opened____May l ,2010.  
[     ]

A.on    
B.in    
C.to    
D.At

—How long have you lived ____ Jieyang?    
—_____ fifteen years.    
[     ]
A. in; For                              
B. in; Since    
C. at; For                              
D. at; Since
—When  did  you leave home this morning?
—_____ half past seven.    
[     ]
A. In        
B. To        
C. At        
D. On
We looked at each other ___ surprise when we heard a  bird singing " Happy birthday to you" .     
[     ]
A. in        
B. to        
C. by        
D. at
A person with good manners never laughs ____ people when they are ____ trouble .    
[     ]
A. on; in    
B. in; at    
C. on; at    
D. at; in
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