在他疾病的后期阶段，他需要全天候的护理。

He needed round-the-clock care in the ___later stages of his illness.

在他的晚年，他住在伦敦。

During his ___later years, he lived in London.

私人养老金能在人生的后期阶段提供经济支持。

Private pensions provide financial support in the ___later stages of one's life.