March 12th is Tree Planting Day.This year our school bought enough trees before that day .On that day , we didn't had classes .The teachers and our classmates planted trees around our school.

　　三月十二号是植树节。在这之前我们学校今年买了足够的树。那天，我们不用上课。老是和同学一起在学校周边种树。