A、Walk down the Royal Mile. B、Visit Holyrood Palace. C、Visit the Castle. D、Pay a visit to the Queen. D

W: Excuse me. Do you live here?
M: Yes, I’ve lived here in Edinburgh all my life.  My name’s Rory McDonald. How do you do?
W: Hi, I’m Chris Hudson from Phoenix, Arizona. I’m an oil engineer. I’m on my way to London on business.
M: How long are you staying in Edinburgh?
W: Just a day. What can I see here in twenty-four hours?
M: Well, most tourists want to visit the Castle. It’s on Castle Rock. It’s where the Scottish government used to be. From there you can walk down the Royal Mile.
W: What’s the Royal Mile?
M: It’s a narrow street of medieval houses. It’s worth seeing. Then you really should visit Holyrood Palace.
W: Who lives in the Palace?
M: No one, except the Queen when she comes to Edinburgh, which is usually once a year. But the kings and queens of Scotland used to live there be fore Scotland was united with England.
W: When was that?
M: That was...er, let me see 2. in 1603.
W: You seem to know a lot about Scottish history.
M: Aye, well, I’m a McDonald of the McDonald clan. You know there are clans in Scotland, and we’re all proud of our history.
W: I’d like to buy something as a souvenir of the trip. What should I buy?
M: Why don’t you buy some sweaters? Scottish sweaters are famous for their quality. And you must buy some whiskey. Of course you know that’s our national drink.
W: Yes, I’ve already bought the whiskey.
M: Good. But remember you mustn’t put ice in it. That spoils the flavor!
W: Oh, we Americans put ice in everything!