听对话,填空。 Sam: Hello! This is my ___________, John. This is Peter. Peter: Hi, John! John: Hi, Peter. Peter: How ___________ are you? John: I'm ___________. Peter: What ___________ are you in? John: I'm in Class 3. Peter: Is Miss Li your English ___________? John: No, she's my ___________ ___________. Peter: Is she at ___________? Sam: Yes, I ___________ so. Peter: Thank you. ___________. Sam: Bye! John: Bye!