阅读下列四篇短文，从每小题后所给的A,B,C或D四个选项中，选出最佳选项。
Exploit your parking space
An unused parking space or garage can make money. If you live near a city center or an airport, you could make anything up to ￡200 or ￡300 a week. Put an advertisement(广告)for free on Letpark or Atmyhousepark.
Rent(出租)a room
Spare room? Not only will a lodger(房客)ea rn you an income, but also, thanks to the governmentbacked “rent a room” program, you won't have to pay any tax on the first ￡4,500 you make per year. Try advertising your room on Roomspare or Roommateeasy.
Make money during special events
Don't want a fulltime lodger? Then rent on a shortterm basis. If you live in the capital, renting a room out during the Olympics or other big events could bring in money. Grashpadder can advertise your space.
Live on set
Renting your home out as a “film set” could earn you hundreds of pounds a day, depending on the film production company and how long your home is needed. A quick search on the Internet will bring up dozens of online companies that allow you to register your home for free—but you will be charged if your home gets picked.
Use your roof
