6、-playtheconversationTheriverwasdirty.Eventhebottomoftheriverwasfullofrubbish.Butitusedtobesoclean!Yes,butpeoplearethrowinglitterintotheriver.Everyoneinthistownshouldplayapartincleaningitup!1.We’retryingtosavetheearth!我们正在竭尽全力拯救地球!trytodo=tryone’sbesttodo努力去做某事e.g.We’lltry t