根据你所听到的问题，选择正确的答案，听两遍。（6%）
（1）A. It’s on the wall.    
B. It means No parking. 
C. No, it doesn’t.
（2）A. No, I can’t.       
B. Sorry, you can’t.     
C. No, it isn’t.
（3）A. We had a big dinner.
B. Yes, I did.          
C. I buy some fireworks.
（4）A. Yes, we are.      
B. Sometimes it is.      
C. No, it’s clean.
（5）A. Plant some trees.  
B. Move away the factories. 
C. Drive a lot.
（6）A. Smoke from cars.  
B. My dirty clothes.  
C. I should sweep the floor.