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II. 单项填空。  
1. The air in Beijing is getting much ________ now than a few years ago.  
A. clean                      B. cleaner   
C. cleanest                 D. the cleanest  
2. Mobile phones are very popular now and they are ________ than before.  
A. cheap                     B. cheaper  
C. cheapest                 D. the cheapest  
3. Li Lei ran ________ more slowly than the other boys in the sports meeting.  
A. so             B. too       C. very         D. much  
4. I can type ________ than I can write by hand.  
A. fast                        B. much faster   
C. more faster             D. fastest  
5. Cathy did quite ________ in the English competitions, and I did even ________.  
A. better; well             B. well; well   
C. well; better             D. better; better  
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