Unit4PlantingisgoodforusTreePlantingDayMarchthe12thWhenisTreePlantingDay?planttreesWhatshouldwedo?watertheyoungtreeWhatwillyoudo?treeswithflowerskeeptheairclean空气Whyshouldweplantmoretrees?keepuscoolmaketheplacebeautiful地方planttreeskeeptheaircleankeepuscoolmaketheplacebeautifulplanttreeskeeptheaircleankeepuscoolmaketheplacebeautifulplanttreeskeeptheaircleankeepuscoolmaketheplacebeautifulairplaceTreePlantingDayPairworkP18CTreePlantingDayishere.Whatshouldwedo?Whatwillyoudo?ReadandanswerP19DWhatistheweatherlikenow?Theweatherischanging.It’sgettinghotter.ReadandanswerP19DWhydopeoplecutdowntrees?Becausewewantmorehouses,roads,andbuildings.Farmersalsoneedmorelandtogrowriceandvegetables.Whyshouldweplantmoretrees?Becausetreeshelptomaketheaircoolandfresh.Theymaketheearthcleanandgreen.完成P19Tickifyouagree.Peopletrees,becausewewanthouses,andbuildings.Farmersalsoneedmorelandtogrowandvegetables.Theischanging.It’sgetting.Weneedtomoretrees.Treeshelptotheairandfresh.Let’splantmoretreestomaketheEarthcleanand.cutdownmoreroadsweatherhotterplantmakecoolgreenP19EWhydopeoplecutdowntrees?Whyshouldweplantmoretrees?needmorehousesneedmoreroadsneedmorebuildingsneedmorelandmaketheaircoolmaketheairfreshmaketheearthcleanmaketheearthgreen完成P19FAbirdAkiteAmonkeyAbeeAspiderAnant
