选择适当的词并用正确形式完成短文，把所选词的适当形式写在下面的横线上，使短文内容完整、正确。（每空1分，共10分）

The police do ____ things for us. They help keep our things and us _____. They help keep cars moving safely. They take care of people who are hurt. Then they see these people get to a doctor.
The police go around town to see that ____ is all right. They get around town in many _____. Some of them walk or go by car. In some big cities，some of the police ride on horses. It is strange to see these animals in the street.
As they go around town，the police help people. Sometimes they find _____ children. They take the children home. If the police see a fight ，they put an end to it right away. Sometimes people will ask the police _____ to get to a place in town. The police can always tell the people which way to go. They know all the streets and roads well.
Some police stand at crossings. They tell the cars when to go and when to _____. They make sure that the cars do not go too fast. They help children ___ the street. They also help people who can’t walk too well.__ 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. We need them. And we should thank them___ a job well done.