补全对话。 Mary: Hi, Tom. How nice to see you here! Tom: Hello, Mary. How are you? Mary: 1 , thank you. Tom: What are you going to buy? Mary: You know I'm preparing a party at home, so I'll buy some vegetables and fruits. Oh, yes. 2 Tom: 3 Mary: You don't have to bring anything. As long as you come and join us, 4 Tom: Thank you, Mary. Mary: 5 Bye! Tom: Bye-bye! A．What shall I bring then? B．You are welcome. C．You're invited, too. D．Not too bad. E．I like parties. F．That will be fine.