A、7 and half hours. B、8 hours. C、8 and half hours. D、10 hours. B

M: Hi, Cathy! I heard that you’ve been to London on business for several times, I have never been there before, so I really need to ask you a few questions.
W: Sure, my pleasure.
M: Where do you recommend I should stay? What’s the Holiday Inn like?
W: It’s nice there. It’s in the city center and has all the usual business facilities you’ll need. The service is first class.
M: Oh, good. So I’ll get a room there. Now, what’s the best way to get to the hotel from the airport? Should I take a taxi?
W: Well, you can, but you don’t have to. There’s an excellent subway system.
M: Mmm... can you tell me something about the business hours? I mean, what time are the banks open?
W: The banks? They open at half past eight and close at four thirty.
M: I see. And are they open on Saturday, too?
W: I’m afraid not. And I’d better warn you, the shops close very early in London. During the week they’re open until half past six, but on weekends they close at four.
M: At four! Right. Now, what’s the weather like at this time of year?
W: Well, it’s usually warm. But sometimes it turns very cold and wet. So don’t forget to take an umbrella with you! By the way, when are you going on this trip?
M: Oh, not until the middle of the month. September 15th, I think. Anything else you want to advise me on?
W: No, nothing I can think of. It’s a nice place, peaceful and calm, and the people are friendly. I’m sure you’ll enjoy your stay there.