用方框中所给单词的适当形式填空，使短文通顺、正确、连贯(每个单词限用一次)
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The police do many things for us. They help 56 our things and us safe. They help keep cars moving 57 . They take care of people who are 58 . They see these people get to a doctor.
The police go around town to see that 59 is all right. They get around town 60 many ways. Some of them walk or go by car. In some big cities, some of the police ride on 61 . It is strange to see these animals in the street.
As they go around town, the police help people. Sometimes they find 62 children. They take the children home. 63 the police see a fight, they put an end to it at once. Sometimes people will ask the police how to 64 to a place in town. The police can always tell the people which way to go to. They know all the streets and roads 65 than we do.
Some police stand at the 66 . They tell the cars when to go and when to stop. They make sure 67 the cars do not go too fast. They 68 children cross the street. They also help people who can not walk too well.
69 the police, our streets would not be safe. Cars might go too fast and hurt people. Lost people might never be found. The police do a good job. Without them, 70 of people might die. So we should thank them for a job well done.