75.Many people think that electricity is one of the most important _____________(发明) in

the history.

74.___________ (百万)of foreigners came to Beijing to watch the Olympic Games this summer.

73.Autralia is the largest English speaking country in the ___________(南方) part of the world.

72.People enjoy _____________(他们) by doing sports.

71.The girl didn’t give up ___________ (虽然)she failed again.

70.Playing football is many boys’ _____________(最爱).

69.Noise does great harm to people’s ____________(健康).

68.It is __________(浪费) to throw away our old clothes and the bottles.