1) Don't ... you old clothes. Give them to charities. a) keep clean b) throw away 2) People ... the rivers and we can't swim in them. a) pollute b) clean 3) Let's ... animals from hunters. a) pollute b) protect 4) Don't ... water. Turn the water off. a) waste b) save 5) People have ... the home of many animals. a) cut down b) destroyed

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