Trees are very helpful and important for us. (樹對我們人類是多麼的重要和有用。)We should plant more and more trees in order to live better and more healthy in the future. (爲了將來我們的生活過得更好、更加健康我們應該種更多的`樹。)It’s everyone’s duty to love and protect the environment.(愛護和保護環境是每個人的責任和義務。)
