We should pay attention to our behaviors. We should be polite and friendly to others. When people are in trouble, we'd better try our best to help them. Students should obey the school rules. Don't tell lies and be trusted. We should obey the traffic rules. It's our duty to keep the environment clean and tidy. So please don't throw the rubbish. Don't pick up the flowers or cut down the trees. We shouldn't disturb others. Keep quiet and don't smoke in public place. Stand in line and give our seat to others.If everyone behave well, our world will become more and more beautiful.