A、They learn to pose for art college students. B、They focus on exams in universities. C、They express opinions on various subject

Who couldn’t do with a little extra money? Maybe you need to pay off a loan or perhaps you just want to save up for a holiday.(29)Whatever your reasons, these simple money-making schemes could make all the difference.
    The first scheme is to pose as a live model. You don’t have to be young or beautiful to pose for an art class. You just need to be able to sit still for a long time.
    The next one is to invigilate exams. Lots of schools and universities need outside invigilators, mostly in January or during the summer.
    The third one is to join a focus group. If you love expressing your opinions on anything from apple juice to a new TV ad, this might be just the thing for you.
    You can also take part in psychological research. It’s interesting work because it’s all about you. and involves things like simple memory tests or having brain scans while you talk.
    The fifth one is to be a mystery shopper.(31)These are people who are paid to go shopping, cat in restaurants or stay in hotels. All you have to do is write a report on how you were treated as a customer.
    The last way of making money was to let companies advertise on your car. If your travel a lot and you’ve got a nice car.it could have a starring role in an advertising campaign.
29. Q: What is the passage about?
30. Q: What do people do in a focus group ?
31. Q: What is a mystery shopper?