从对话后的选项中选择适当的选项补全对话
A:Hello! May I speak to Mr. Smith?
B:I’m sorry._________
A:When will he come back?
B: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:Certainly.____I’ll go and get a pen and a piece of paper. Now please give me your phone number.
A:7667569. My name is Liu Wei.
B:All right. _________

A. Could I take a message? B. Can I leave my telephone number for you? C. Wait a minute, please. D. He isn’t here right now. E. I’ll tell him to call you back.