根据首字母,请你补全对话
1.A:May l help you?B:Yes,p____.
2.A:Could you go and see Miss White with me now
B:l'm s____.l'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___l sit here?B:Yes,of c____