—How did you manage to get such a nice old painting?   
—Quite _____.     
[     ]
A. by accidents    
B. by a chance  
C. by accident  
D. by incident
Operation rooms should be kept free ______ bacteria of any kind.
[     ]
A. with    
B. for    
C. from  
D. to
It will be some years before some foreign doctors change the impression they have ____Chinese medicine, _____, in their opinion, is nothing but raw herbs and not effective at all in treating diseases.
[     ]
A. for; which  
B. on; what  
C. to; that  
D. on; which
_______ avoid possible embarrassment, Tom ______ignores her former girlfriend whenever he sees her.
[     ]
A. In order to; deliberately  
B. As to; intentionally  
C. So as to; purposely  
D. So that to; on purpose
You must repay the loan, and any interest that is _____ on it.  
[     ]
A. over    
B. beyond    
C. due    
D. account
_______ the trouble they were in, they still managed to help us with some money.
[     ]
A. In spite of    
B. Despite of    
C. In terms of    
D. In sight of
Nobody knows for sure what effect the global warming have ______ our environment in the long term.   
[     ]
A. of    
B. with    
C. for    
D. on
People _____ are kind and honest but Tom is not such kind of person ______.   
[     ]

A. in general; on the whole  
B. on the whole; in general  
C. on the whole; in all  
D. all in all; in general

I am not appealing for myself. I am appealing ______ the millions and millions of fresh college graduates.   
[     ]
A. on behalf of    
B. in the opinion of    
C. with a view of    
D. in terms of
Looking up, I saw some children ______ rags were looking at me silently as I ate.

[     ]

A. by
B. in
C. with
D. on
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