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1. 当我们不用电灯的时候我们应该关闭 它们。

We             the lights when we aren't using them.

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day.

根据短文内容,填写表格。

The Three R's

1     

OPut our lunches in reusable boxes. O Don't 2      food.

O Write on both sides of pieces of paper.

3     

O Reuse your bags,for example,use them to collect cans for 4      .

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Recycle

O Don't throw away recyclable things. O Paper, 5      and aluminum cans can all  be recycled.

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4.________  5._________

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