1、Unit 4Unit 4 Planting trees is Planting trees is good for us.good for us.landoceanforestour earthWhat should we do for our earth?What should we do for our earth?We should plant more trees.Why should we plant more trees?Planting trees is good for us.Tree Planting DayTree Planting Day植树节植树节plant trees
2、种树种树What can trees do?keep the air cleanmake us coolmake the place beautifulIts Tree Planting Day today.Planting trees is good for us.My friend and I enjoy planting trees.Yes,planting trees is fun.I like to plant fruit trees.Trees can keep the air clean.Trees can make us cool.Trees can make the place beautiful.Trees can Trees can 小组讨论小组讨论ReportReportPlanting trees is good for us.Trees can We should Thank youThank you
