题目内容：

On a small farm in Mexico, there are no schools. A bus is the school. The driver is the teacher. It’s a school bus, but it doesn’t take the children to school. It just goes round from place to place, and sometimes it comes to this farm. The bus stays here for three weeks. The farmers call it a school on wheels. Every time when the bus comes, the farmers come, running to it, shouting and laughing. They warmly welcome the school bus.

When the bus is on the farm in the morning, the teacher teaches the small children. In the afternoon, the bigger children come to have their lessons because they must work in the morning. At night, the fathers and mothers come to school.                   . The farmers hope that some day they can have a real school on their farm.

1.The bus school            .

A. takes the children to school B. stays here for a long time

C. takes the fathers and mothers to school D. goes round from place to place

2.What does the underlined word “they” in the last paragraph refer to(指的是)？

A. The fathers and mothers. B. The bus drivers.

C. The bigger children. D. The farmers.

3.Which of the following is the best for “           ” in the second paragraph?

A. They want to learn, too. B. They want to relax themselves.

C. They come here for dinner. D. They want to drive the bus.

4.Which of the following sentences is TRUE?

A. School bus is a real school for farmers’ children.

B. The bus school has no teacher at all.

C. The bus school has no student.

D. The children and their parents on the farm all come to the bus school to learn.