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.