We ___ protect our environment.On time和ought to选择那一个?

everyone in our school ___(know)that we should try to protect our planet We ___ protect our environment.On time和ought to选择那一个? We should help __ (protect) our nature. 根据上下文及首字母提示补全单词The e—— is our home ,so we must protect it ·句子转换We must do something to protect our earth from being pollutedWe must ___ ___to ____ our earth from being polluted The p__ Earth is our home.We should protect it. what should we do to protect our environment? 单词拼写 A__are our friends.We should protect them. why should we protect our environment作文100字 we should try to protect our environment______it is too late. 急,急,急,can we do to protect our beautiful We plant trees to protect our environment(保持原句意思)We plant trees ------------ ------------- -------------protect our environment we should protect the animals from ___ (be) killed. It is important that we shoeld protect our environment【改为同义句】It is important【】【】【】 protect our environment people have found new ways ___ our environment .A.to protecting B.protect C.to protect D.protects . We should do our best ___ ___ ___ ___ ___ ___ ___(阻止人们捕杀野生动物) According to the passage,what can we do to protect our earth in our everyday life We must protect our earth well.（改为被动语态） Our earth must___ ___by us well.