A. It doesn't matter.    
B. That's all right.  
C. Sorry, I won't.      
D. Excuse me.

A. Listen, hear  
B. Listen to, hear  
C. Listen, hear to  
D. Listen to, hear to

A. Don't to be  
B. Don't be  
C. Not be  
D. Be not

A．to be    
B．being    
C．are        
D．be

A. Be open:opens  
B. Be open；is opening  
C. Open；is open  
D. Open；Opens

A. to go for
B. to go to
C. go for
D. go to

1. _____ (not drop) litter carelessly.
2. Are they interested in _____ (play) badminton?
3. Listen! The music  _____ (sound) beautiful.
4. Tom with his friends  _____ (plant) trees when I saw him.
5. Thousands of visitors go to Zhalong _____ (go) birdwatching every year.
6. Amy studies hard and she is _____ (good) student in her class.
7. It is _____ (possible) for us to finish so much homework in one week.
8. You can't believe what he told you because he is _____ (honest).
9. Peter is much _____ (strong) than Kitty.
10. September is the _____ (nine) month of the year.
11. I would rather _____ (watch) TV than go shopping with you.
12. It is warmer in southern areas than in _____ (north) areas.
13. He failed in this English test because of his _____ (careful) work.
14. What prevented you from _____ (come) to my birthday party yesterday?
15. I like all kinds of music, _____ (include) classical music.

A. will you
B. won't you
C. don't we
D. shall we

1. Call him back! (改写为否定句)                
    ________ ________ him back!
2. There will be more roads in our town.(改写为一般疑问句)
    _____   _ there ____    __ more roads in your town?
3. They must not sweep the floors today.(对划线部分提问)    
    _______ ________ they sweep the floors?
4. Going to bed early and getting up early will keep you active in the daytime.(改为同义句)
    Going to bed early and getting up early will keep you active ________ the ________.
5. 我们的英语老师擅长讲笑话.(完成译句)
    Our English teacher    ___ well ____   _ telling jokes.

A. Join        
B. Join in        
C. Come        
D. Go