My father was always cheerful although he was in poor health, (s

My father was always cheerful although he was in poor health, (simple sentence)
【正确答案】：My father was always cheerful in spite of his poor health./My father was always cheerful although his poor health.
【题目解析】：以上两个句子由于主语一致，所以我们可以用although或in spite of将其变成一句单句。