从对话后的选项中选择适当的选项补全对话，把相应的字母番号填在方框下面的横线上。
A:Hello! May I speak to Mr Smith?
B:I’m sorry._____1____
A:When will he come back?
B:I think he’ll be back in an hour.____2____
A:That’s very kind of you. I’d like him to come to my birthday party.____3_____
B:Certainly.___4____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. ______5_____
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.
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