补全对话。 A: Hi! Good morning. B: Good morning. __ 1 __? A: My name is Tom. Nice to meet you. B: __ 2 __. A: Excuse me. Do you have an English tape? B: An Eng lish tape? __ 3 __. A: Is it on your desk? B: No, it isn't. A: __ 4 __? B: I think (认为) it's under my chair. A: __ 5 __. B: You're welcome (不用谢).