举止得体一直是与人相处的秘诀，作为学生会的一员，David正在起草一份倡议书，提倡大家规范自己的行为。请你帮他将倡议书补充完整，每空一词。

    Behaving well is the to getting on well with others. As a student, I think it's very important to do everything time and keep promises. Never lie to others or say bad words. We should be polite to others offer to help people in need. We'd better not talk in public. Don't  rubbish on the ground. Remember to obey the traffic rules.