For example, it is impolite to drop litter everywhere. Also, pushing in before others is quite rude.
I think everyone should behave politely. In the school library, we should keep quiet. It is necessary for us to return the books on time. In the canteen, we should queue for our turn. Moreover, we'd better not make too much noise while eating or drinking. In the classroom, we mustn't write or draw on our desks. And we shouldn't shout or laugh loudly.
We need to be polite outside the school as well. We can ’ t cross the road until the green light is on. While we are enjoying ourselves in the park, we shouldn't pick flowers.
