prolong|prolonged

健康的饮食可以延长你的寿命。

Eating a good diet can ___prolong your life.

然而，没有人预计罢工会延长超过一周。

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

新政策可能会延长经济复苏的过程。

The new policy might ___prolong the economic recovery process.