đội mũ bảo hiểm - wear helmet, sử dụng phương tiện công cộng - use public vehicles, sử dụng năng lượng thân thiện với môi trường - use environmentally -friendly energy, trồng cây - plant more trees, tuân thủ luật - obey traffic rules , ngưng xả rác bừa bãi - stop littering,

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