71. He hopes to t around the world one day.

70. Now more and more f are interested in Chi- nese culture.

69. The young woman is very b . She is not afraid of anything.

68. Close the window,or the wind will b everything off my desk.

64. It is p to offer seats to the old on the bus.

63. The newly-opened museum is certainly w a visit.

62. When swimming,you should put s first.

60. —W  bag is this?

—It's mine.

59. All the students are studying at school e  Tom,who is ill at home.

58. The telephone was i  by Alexander Graham Bell in 1876,that is,he was the first person to make the telephone.