完形填空
The United States is full of automobiles(机动车) .There are still many families without cars. But some families have two or 1 more. However, cars are used for 2 than pleasure. They are a 3 part of life.
Cars are 4 for business. They are driven to offices and factories by workers who have no 5 way to get to their jobs. When salesmen are sent to 6 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 home.
