It was Tree Planting Day.We went to plant trees by the river.We went there by bus at 7:00 from our school gate.When we got there at 8:00,we began to plant trees.We planted at least 50 trees and watered them very well.Although we were tired,we felt happy.I thought it was our duty to make our environment more and more beautiful.植树节,我们去河边植树.我们乘公共7:00从学校去那.8：00到那就开始种树.我们至少种了50棵树并给他们浇水.尽管我们很累,但我们感到很高兴.我认为使我们的环境变得越来越美丽是我们的责任