we must keep sea water clean and stop___it(pollute)

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• Our teacher always tells us to keep sea water ______ and stop ______ it.(clean,pollute)
• we must keep sea water clean and stop___it(pollute)
• the earth is our home.we must ___the land,air,and water clean.为什么是keep而不是get
• 词型填空 用所给词语的正确形式填空1.We can't swim in the river because of the ___(pollute)2.People need to use water for ____(bath)and washing clothes.3.All froundwater is clean enough for us ____(drink)4.People ___(live)near the sea can use as much water as they like.5.How do you know when it starts and ____(finish)?6.We need water for____(wash) clothes.
• Complete the following sentences：1、Some factories often p____dirty water.2.We often keep classroom clean and t_____3.N____ of us has been to Summer Place.4.Excuse me,have you got any books o___ science?5.Have you ever p_____ apples?9.I am afraid you must p___ for the losrt book.
• 重新排列下列单词,组成句子.1.beaches,everyone,keep,should,our,clean._______________________________2.people,get,ill,may,they,when,dirty,drink water.___________________________3.should,we,do,best,to,our,take,care,good,of,environment,the_________________4.can,wu,stop,from,them,pouring,water,dirty,the,into,river______________5.to,water,must,we,save,turn,off,the,when,tap,we,out,brush,teeth___________
• I don't think she is the most beautiful _______ (type) of the five.A sewage plant is a please where the polluted water is _______ (clean) up.Electroinic brains are the machines that help in people's _______ (calulate) The mistakes in the articles must be _______ (correct) one by one before they are published._______ (pollute) is a serious question we should pay cattention to.
• Our teacher always tells us to keep sea water ______ and stop ______ it.(clean,pollute)
• we must keep sea water clean and stop___it(pollute)
• 单项选择The earth is our house.We must _____ the land,air and water clean.A .change B.let C.stay D.keep
• 失字组词：答应别人的事没做叫什么?
• 先观察1+3=4=2的平方,1+3+5=9=3的平方,利用规律计算1+3+5+7+9...+2007