Trees are very helpful and important for us. (树对我们人类是多么的重要和有用。)We should plant more and more trees in order to live better and more healthy in the future. (为了将来我们的生活过得更好、更加健康我们应该种更多的`树。)It’s everyone’s duty to love and protect the environment.(爱护和保护环境是每个人的责任和义务。)
