他几乎从不生病的母亲死于新冠肺炎，真是令人遗憾。
It’s such a pity that his mother who __________ _________ fell ill died of COVID-19.
我相信，如果我们继续齐心协力，我们就一定能贏。
I believe if we continue to _________ ________ , we are sure to win.
她没有呆在家里过春节，而是去了武汉当志愿者。
_________ _________ staying at home for the Spring Festival, she went to Wuhan to be a volunteer.
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.
