摘要：tree-planting day today is tree-planting day. we went to plant trees in daning greenland. as soon as we arrived, we began to work.some were digging holes, some were planting and others were watering.

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　　tree-planting day

　　today is tree-planting day.

　　we went to plant trees in daning greenland. as soon as we arrived, we began to work.some w

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