78.They went to the l_______ hospital to volunteer.

77.We shouldn’t w_____ the time ,we must work hard.

76.If I had an o________to be abroad ,I’d like to visit France.

75.Once upon a time, there lived an old man c_____ Tom.

74.To his s_______ ,he found there was a house at the end of the road.

73.We would not c_______ more on our clothes than our studies.

72.Not all the students like to wear u______ at school.

71.We e______ ourselves at the party yesterday.

用方框中所给单词的适当形式填空，使短文通顺，正确，连贯(每单词限用一次)

people of the _56__century did not see any cars in their lives. Cars_57__invented in the last century. Today they have__58_the lives of everyone in the United States.Most Americans feel that they are poor when they have_59__cars. Why are cars widely _60__in the United States?Here are three reasons. First of all, the country is very large and Americans enjoy going here and _61__. 62__the help of cars they can go _63_easily. The_64__ reason is that trains have_65__been so common in the United States as they are in _66__ parts of the world. What’s more, Amercans have to spend a lot of _67__traveling by plane. The third reason is the _68__ important one. Americans don’t like to _69__for buses or trains or_70_planes. They like cars, for they want to travel fast at any time.