选择下列词汇或短语完成下面对话。将正确的字母填入空白处。

A．Could I take a message B．Please have a rest C．What’s wrong with you D．He isn’t here right now E．I’ll tell him to call you back F．Wait a minute, please G．Can I leave my telephone number for you

A：Hello! May I speak to Mr Smith？
B：I’m sorry．       ,I think he’ll be back in an hour．       ?
A：That’s very kind of you．I’d like him to come to my birthday party．       ?
B：OK．       (79)! I’ll go and got a pen and a piece of paper．OK．Please give me your phone number．
A：5697846．My name is Liu Wei．
B：All right．       ．