_______protect our environment,we plant trees and ________th

_______protect our environment,we plant trees and ________th The more trees we plant,the______(good)our environment is. We plant trees to protect our environment(保持原句意思) We plant trees every year to protect our environment 改成被动语态 We will plant more trees so that improve our environment 的同义 ----more trees we plant,----better environment there will be We should protect our environment ___________care of trees. More trees and ______ will make our environment better we must plant more trees to ____ our planet greener. we plant trees every we should plant more trees ,and..then the every year we plant -------- trees