根据首字母,请你补全对话.
1.A:May I help you?
B:Yes,p______.
2.A:Could you go and see Miss White with me now?
B:I'm s______.I'm busy now,
3.A:S_________ we meet at the zoo at nine tomorrow morning?
B:OK.
4.A:Thanks a lot,Mr Hill.
B:you're w________.
5.A:How is your mother?
B:She's fine ,t________ you.
6.A:M____ I sit here?
B:Yes,of c_______.
请尽快回答.