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Look! It's our Earth. There _______ some water, hills and trees on it. We shouldn't _______ water, because there is not _______ water in many places. We also______ cut down too many trees. We should _______ more trees. They are _______ for the air. People like using _______ bags in the supermarket. But I think they're bad for the Earth. We should use _______ bags and boxes instead.

The Earth is our ______. We should ________ it.