電子課本網(wǎng) › 第82頁

第82頁

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save and reuse

water. We should save energy. We should save

trees and plant more trees. We should use cloth bags

and glass bottles.

waste water. We should

not drive so much because cars use a lot of energy. We

should not cut down too many trees because trees help

keep the air clean. We should not use too many

plastic bags and bottles.

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