1, please take good care of flowers and trees for campus greening. 2, a flower and a grass are all life, and a leaf is always concerned. 3, green to your hand, beautiful to my heart.

You appreciate the beauty of flowers, and flowers appreciate your nobility. 5. Classmate, it hurts when you hit me. Don't you have any more pain? Please cherish your life. 7. Flowers and plants are speechless, please take care of them. 8. Don't hurt them.

9. Pay attention to the greener grass under your feet and the more delicate flowers on your hands. The grass is sleeping, so don't disturb it on the lawn.

1 1. Trees are working overtime to purify the air. Please don't let the green factory close down. 12. Be merciful, keep green and care for the environment. 13. I am your classmate, too. Please take care of me. 14. Green symbolizes life and cherishes life.

15. For a green campus, please take good care of flowers and trees. 16. I grew up with you.

17. Stop your small step and take a big step for campus civilization. 18. Let's enjoy the flowers with bees and butterflies. 19. How beautiful the trees are, they are littered.

20. Throwing garbage once will cast a layer of dust on your mind, and picking up garbage once will add a piece of pure land to your mind.