Arrange these words into meaningful sentences

​Scarp/ plastic/ recycle/ waste/ we/ paper/ old/ meaal/ an
Burn/ should / and/ the/ not/ cut/ we/ down/ trees/ forest
Air/ cars/ poisonous / from/ are/ the/ in/ big/ gaseser/ polluting/ cities
You / a/ turn/ see/ dripping/ when/ faricet/ it/ off
Leave / trash/ please/ it/ your/ here/ in/ a/ trash/ don't/ put / can