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answer:We must obey the rules and have good manners. Teach: manners . shows some pictures and ask: 1).What should the boy do when he crosses the road? (He should obey the traffic rules.) 2).What is the girl doing? (She is picking flowers in the parks.) 3).What should we do in the library? (We should keep quiet in the library.) 4).What are the man and the woman doing? (They are dropping litter everywhere.) 5)What is the man doing? (He is qu