作业帮Recycling paper is really easy的同义句（）（）paper is really easy
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Recycling paper is really easy的同义句（）（）paper is really easy
Recycling paper is really easy的同义句
（）（）paper is really easy
Recycling paper is really easy的同义句（）（）paper is really easy
it is really easy to recycle paper.
To recycle paper is really easy.