Weshouldn’twastewater.Unit8TheearthTheairTheriverThetreesThewaterHowtosaveourearth?WeshouldWeshouldn'talwaysdrivecars.Weshouldusebikesinsteadofcars.Weshouldn't代替WeshouldWeshouldn'talwaysdrivecars.Weshouldusebikesinsteadofcars.Weshouldn't代替WeshouldWeshouldn'talwaysdrivecars.Weshouldusebikesinsteadofcars.Weshouldn't代替Weshouldkeeptheaircleanandfresh.新鲜WeshouldWeshouldn'tlitter.Weshouldkeeptheriversclean.Weshouldn't乱扔WeshouldWeshouldn'tcuttoomanytrees.Weshouldplantmoretrees.Weshouldn't砍伐种植WeshouldWeshouldn'twastewater.Weshouldsaveeverydropofwater.Weshouldn't浪费节约每滴水WeshouldWeshouldn'tkillwildanimals.Weshouldprotectwildanimals.Weshouldn't捕杀野生动物保护Chooseshouldorshouldn'tusebikesinsteadofcars.keeptheriversclean.killwildanimals.keeptheaircleanandfresh.litter.plantmoretrees.wastewater.•Weshould•Weshould•Weshouldn't•Weshould•Weshouldn't•Weshould•Weshouldn'tChooseshouldorshouldn'tusebikesinsteadofcars.keeptheriversclean.killwildanimals.keeptheaircleanandfresh.litter.plantmoretrees.wastewater.•Weshould•Weshould•Weshouldn't•Weshould•Weshouldn't•Weshould•Weshouldn'tLet'sseewhathappenedtothegirl?Questions:1.Whatisthegirldoing?Sheiswashingherblouse.2.Whatdoeshermothersay?Shesaysweshouldn'twastewater.3.Whyshouldn'twewastewater?Weneedwater.Everyoneneedswater.4.Isthereenoughwaterontheeath?No,thereisn't.5.Whatshould/mustwedo?Wemustsaveeverydropofwater.