His mother died in a car accident last year.He was born last year.定从合句用定语从句把这两个句子合成一句.
问题描述：
His mother died in a car accident last year.He was born last year.定从合句
用定语从句把这两个句子合成一句.
答
His mother died in a car accident last year,when he was born
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