A. the; an    
B. a; the
C. a; /
D. the; /

A. a eight-day              
B. a eight-days          
C. an eight-days'            
D. an eight-day

1. It took US about______ hour to go to ______ Hainan Island by ______ plane.
2. This is ______most important question of all.
3. Mike is never late for school, he is always ______first one to arrive.
4. —Where is ______ guide?
    —He’s standing in line to buy ______tickets for us.
5. ______Greens are on______ visit to______ beautiful city in China.
6. June 1st is ______Children’s Day.
7. When she woke up, she found herself in______ hospital.
8. Pass me ______dictionary next to the radio and I also need______ pen to write something.
9. We can’t see ______ sun on a rainy day.
10. ______ China is______ old country with______ long history.

A. a; a; an   
B. an;/; a  
C. the; the; a  
D. an; the;/

A. a boys'        
B. boy's          
C. the boys'      
D. boys'

A. an    
B. a      
C. a my    
D. my the

A. is; bag          
B. are; a bag    
C. is; a bag        
D. are; bag

A. a                
B. an           
C. the              
D. /

A. a    
B. an    
C. the    
D. ／

A. a      
B. an        
C. the          
D. /