他们打扫房间
They clean the room.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
我们可以给老人讲故事，帮他们打扫房间。
We can tell the old people stories and help clean their rooms.
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上个星期天他们打扫房间了吗？
Did they clean the room last Sunday?
你帮助他们打扫房间了吗？
Did you ______ them _______ their room?
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