老师要求编写四个定语从句的句子，小明把作业写在了电脑中，可电脑程序突然出现问题，小明写好的句子全乱了，他很着急，请你帮他把句子整理好。
1. Jim that I lost the key found yesterday.
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2. I who is know the man a model worker.
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3. The I received yesterday letter that was from my parents.
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4. This who saved is the doctor the boy’s life.
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