老师给我们示范怎样种树，然后我们就开始干起来。
Our teacher showed us how to plant trees, then we started to do it.
她穿上工作服，拿出油漆，从起居室的墙开始干起来。
She put on some overalls, GOT out the paint and started on the living-room wall.
下午3点我们到了那里，老师给我们示范怎样种树，然后我们就开始干起来。
At 3:00 in the afternoon, we got there. Our teacher showed us how to plant trees, then we started to do it.
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