What is a bad friend like ? (急用)

A bad friend will behave impolitly in front of the public, as well as his parents and friends. He might have bad habits too. For young ones, they will always bully the weak ones and be dishonest. For adult ones, they will be smoking or take drugs. If we meet those people, we should stay away from them. If our friend meets a friend like that, we should ask him/her to avoid him.

Some hints might help you:
1.bad influence
2.how the friend behaves in front of the teachers?
3.Do u like him/ her?
4.Did he/she influence you in any ways?
5.Do u think he would/could change?