17. Why are the bus tickets much cheaper than the train tickets？

　　[A] The bus trip takes longer time.

　　[B] The bus stops at several cities.

　　[C] Few people enjoy bus trip.

　　[D] There is no rest room in the bus.

　　18. Why couldn‘ t the passenger use the train ticket to pay for the bus ticket？

　　[A] The train ticket costs more than the bus ticket.

　　[B] The train station belongs to another company.

　　[ C] Her uncle and aunt don ‘ t agree with him to do so.

　　[ D] She doesn‘ t want to pay extra money to the bus station.

　　You now have 40 seconds to check your answers to questions 15 -18.

　　Questions 19-22 are based on the following news report. You now have 20 seconds to read the questions 19 -22.

　　19. Why did the students clean the cars？

　　[ A ] They wanted to help the cleaner ‘ s daughter.

　　[B] They wanted to earn some pocket money.

　　[C] They needed money for their classmate‘ s medical expenses.

　　[D] They wanted to help a hospital.

　　20. What was the biggest problem the cleaner‘ s daughter faced？

　　[A] She had a serious heart disease.

　　[B] She would not clean the cars herself.

　　[C] Her father was ill and she had no family in Hong Kong.

　　[D] Her school friends were too poor to help her.