Nineteen:
19：
Hello. We bought a photocopying machine from you last week, but we're having a few problems with it. I don't think we've worked out how to use it properly yet. Do you think you could send someone round to show us how it works, please?
您好。我们上周从您那里买了一台复印机，但我们遇到了一些麻烦。我们还不知道如何正确使用。请问您可以派人过来给我们展示一下怎么使用吗？
Twenty:
20：
Hello. I'm thinking about placing an advertisement in your Classified Section, but I've got a question. What I'd like to know is whether you think an advertisement in bold would be more effective. I know they're more expensive, but in your experience, is it worth the extra money?
您好。我想在您的Classified Section处投放一则广告，但我有一个问题。我想知道，您是否认为一个粗体的广告会更有效。我知道它们更昂贵，但根据您的经验，它值得花额外的钱吗？