69.Buying cheap tickets is one of the many ways to cut your traveling _________-(预算经费)

68.Soil _________(侵蚀) by rain and wind is a serious problem.

67.Though she_________(犹豫) for a moment, she finally went in and asked to see the dress that was in the window.

66.If you like shopping and going to the cinema, you should go _________(市中心，城市商业区)

65.Tavvelling is good way to learn more about the__________(生活方式) of people in different countries.

64.the transnational company has __________(办事处) all over the world.

63. Darwin is famous for his _________(进化论)。

62.A __________ skiing race is both challenging and exciting.

61.Our teacher often __________(分析)the text in detail.

60.He ___________(保证)we would enjoy our stay in Wuxi.