66.The old couple decided toa boy though they had already had three of their own.

59.The first thingI wanted to do after the exam was totravel around theworld.

58.The reasonhe refused our invitation was that he had to prepare for an exam.

57.This is the very bookbelongs to him.

56.Which is the bookyou bought yesterday?

55.That＇s the doctoron the seriously wounded man.

54.There are two major problems linked with nuclear power plants, the first concerns nucleawaste.

53.Qingdao is a seashore cityyou can enjoy yourselves much by visiting the local scenic spots.

52.The striking contrast with another culture provides a mirrorone＇s own culture is reflected.

51.The British are not familiar with different cultures and other ways of doing things, is often thecase in other countries.

50.He mainly uses the word “strange” to talk about the way people dress and wear their hair.