那位可爱的老太太是我们社区的开心果，大家都亲切地这样称呼她。

That lovely ___old girl is the life of our neighborhood, and everyone affectionately calls her that.

这只15岁的老猫依然活力十足，每天都要追着玩具跑。

This 15-year-old ___girl still has so much energy and chases her toys every day.

作为这所学校的老校友，她经常回来参加年度聚会。

As an ___alumna of this school, she often comes back for the annual reunion.