our homeUnit 4Planting trees is good for usPart A B DTree Planting Dayon 12th MarchWhen is Tree Planting Day ?It’splant treesWhat should we do ? Tree Planting DayWe should plant more( 更多 ) trees.keep the air cleankeep us coolmake the place beautiful小组讨论：Planting trees can ………Report Planting trees is for us. Planting trees can…… Planting trees can…… Planting trees can…… We should……People cut down trees.Why do people cut down trees?Becausewe want more…Farmers also need more to grow rice and vegetables.Drivers also need more to drive the cars.We also need more to live( 住 ) in.But the weather is changing. our earthEarth is our home!
