A、5. B、6. C、7. D、8. C本题的问题关键词是how many。对话中提到Mary可能不来，一共7个人，因此选C。

W: McDonald Restaurant. May I help you?
M: I’d like to book a table for a birthday party.
W: How many people?
M: Just 9. Oh, no. Mary may not come. 7 people, please.
W: What time?
M: 8: 00.
W: I am sorry. There aren’t any tables available at 8: 00. But we can give you one at 7: 00 or 9: 00.
M: A11 right. 9: 00 then.
W: May I have your name please?
M: Miller Brown. You know I am your regular customer.
W: Oh, yes, Mr. Miller. A table for 7 at nine for you.
M: Thank you.
6. How many people would Mr. Miller like to book a table for?
7. When is the table available that night?