根据所给情景选择合适的句子。
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.
