TheUnitedStatesisfullofcars.Therearestillmanyfamilieswi...

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The United States is full of cars. There are still many families without cars, but some families have two or more. However, cars are used for more than pleasure. They are a necessary part of life.

Cars are used for business. They are driven to offices and factories by workers who have no other way to get to their jobs. When salesmen are sent to different parts of the city, they have to drive in order to carry []their products. Farmers have to drive into the city in order to get supplies.

Sometimes small children must be driven to school. In some cities school buses are used only when children live more than a mile away from the school. When the children are too young to walk too far, their mothers take turns driving them to school. One mother drives on Mondays taking her own children and the neighbors' as well. Another mother drives on Tuesdays, another on Wednesday, and so on. This is called forming a car pool. Men also form car pools, with three or four men taking turns driving to the place where they all work.[]

More car pools should be formed in order to put fewer cars on the road and use less gas. Too many cars are being driven. Something will have to be done about the use of cars.

28. The United States is filled with cars, but .

A. every American has a car B. few families have two cars or even more

C. not every family has a car D. every family has a car

29. What's the main idea of the second paragraph?

A. Workers drive cars to offices and factories B. Cars are widely used

C. Farmers drive into cities to get supplies. D. Salesmen drive to carry their products.

30. Which statement is true according to the third paragraph?

A. Small children are driven to school.

B. All children go to school by bus in some cities.

C. Mothers drive their children who can't walk to school.

D. School buses pick up all children.

31. Mothers form car pools in order that .