A、Friday next week. B、Thursday next week. C、April 30th. D、This week. AJoe提到，招待会于4月21日，即周五举行；再结合前面提到预订下周的餐饮服务，可推知A正确。

W: Hello. Happy time catering services Victoria speaking, how can I help you?
M: Hello Victoria, this is Joe Smith from country holidays. I wondered if you could do some catering for us next week. We are having a small reception. It’s to launch our summer holiday advertising campaign. Would you be free?
W: When exactly is it Mr. Smith?
M: April 21 that’s Thursday. Oh, sorry, no, it should be Friday.
W: Oh yes, I can do that. Where will you be holding it?
M: We thought we’d have it at head office and use the conference room because there is enough room for everyone there.
W: Okay, what sort of things would you like?
M: Just a light lunch. I think so that people can eat while they move around and talk to each other. You did something similar for us last year. We’d be happy to have the same menu again.
W: Right, I will look at my diary and see what you had last time. Oh, I nearly forgot to ask you. How many should I cater for?
M: Well, I think most people will be able to come perhaps around thirty. No, let’s say 35 to be sure.
W: Right. Thank you for getting in touch Mr. Smith. I’ll send you confirmation of the arrangements by the end of this week.
M: Okay.
6. What did Joe Smith telephone Victoria for?
7. When will the lunch be held?
8. What can we learn about the summer holiday advertising campaign?
9. Why does Joe Smith prefer a light lunch?
10. What can we learn from the conversation?