阅读理解，判断正误。

We all know that what children do at school is very important. Getting to school safely is also important. Some students are lucky to live near the school. But others have to walk long distance, take the bus or take the subway. How can you keep safe on the way to school? Here are some things you can do:

If you take the bus or take the subway, you should stand away from the door.

When you are on the subway, make sure that you are with friends.

Do you know how to cross the street? Look left, right and left again before crossing. If there is a traffic light (交通灯), cross only when the light is green or when the walk sign is on.

Use the seat belt if your parent drives you to school.