1.你想让别人告诉你4+12等于多少，你会说：    

A. What's four and twelve?    
B. What's five plus twelve?  
C. Four plus twelve is sixteen.

2.别人询问你11 +9等于多少时，你可以这样回答：   

A. Eleven minus nine is two.    
B. Eleven plus nine is nineteen.  
C. Sorry, I don't know.

3.当别人同答问题错了，你可以说： 

A. Sorry, you're wrong.    
B. All right.  
C. You're right.

4.当别人不小心撞到你向你道歉时，你会说：   

A. Oh, I’m sorry.    
B. All right.  
C. That's all right.