题目

在横线上填写适当的句子，补全对话。A: Hi, welcome to Class One, Grade Seven. I'm Paul.B: I'm Gina. Nice to meet you.A: Nice to meet you, too. B: I'm eleven. A: I'm eleven, too. B: My birthday is on December 6th.A: Wow! Today is your birthday. B: Thank you, 答案：【1】What's your name?【2】How old are you?【3】How/ What about you? /How old are you?【4】When is your birthday?【5】Happy birthday (to you)!计算：-22-4sin45°+=（    ）A.4B.4C.-4D.-4-2