A: What are you doing?

B: I am planting the little tree. It is my birthday tree. It grows up with me.

A: Oh, you are so good!

B: This is the mother tree. This is the father tree. Every Sunday, I come here to water them.

A: I think the tree is very important for ours. Do you know?

B: Yes! Trees can stop the wind and sand, hold the earth and water and clean the air.

A: You are right! The trees can make our city beautiful.

B: I think everyone should take good care of the trees.

A: Last time, I saw a little boy climbing a little tree. I stopped him.

B: Well done! I will tell my friends to protect the trees. They are our friends.