健康饮食可以延长你的寿命。

Eating a good diet can ___prolong your life.

然而，没有人期望罢工会延长超过一周。

However, nobody expects the strike to be ___prolonged for more than a week.

新疗法旨在延长癌症患者的生存期。

The new treatment aims to ___prolong the survival of cancer patients.