我们永远不要拿不属于我们的东西。
We should never take anything that doesn’t _________ _________ us.
我们应该思考如何把中国文化介绍给全世界。
We should think about how to _________ Chinese culture _________ the world.
That is his old house. He lived there for twenty years. （合并为一句）
That is his old house _________ _________ he lived for twenty years.
His mother will come back in five days. （对划线部分提问）
_________ _________ will his mother come back?
Chinese doctors saved many patients all over the world. （改为被动语态）
Many patients all over the world _________ _________ by Chinese doctors.
David can hardly speak Chinese. （改为反意疑问句）
David can hardly speak Chinese, _________ _________?
