完成下列对话。 A. And yours? B. What's your name? C. What's this? D. Hello! E. Nice to meet you, Tom A: Hello! B: __ 1 __ A: __ 2 __ B: My name is Mary. __ 3 __ A: My name is Tom. B: __ 4 __ A: Nice to meet you, too. B: Excuse me. __ 5 __ A: It's a clock. B: Thank you. Goodbye! A: Goodbye!