For example, there are public advertisements, which(鼓励) citizens to participate in improving their neighborhood, protecting the environment, and helping other people. Over the last (十年) , the government has sponsored advertisements to(教育)the public on fighting AIDS, saving water, helping the poor, giving up smoking, etc. These advertisements have helped to increase public(知识)about topics that used to be i(忽略)by most people, and this has made our society a better place for everyone.
