Read and choose.(从B中选择合适的答案回答A中的问题,把序号填到前面的括号中) A ( )1. Let's go to the library. ( )2. Where is the teacher's office? ( )3. Do you have lunch at school? ( )4. How many desks are there in your class? ( )5. Is that your pencil? B A. Yes, I do. B. Yes, it is. C. Forty-six. D. OK. E. It's on the first floor.