我的狗十多年来一直是我忠实的伙伴。

My dog has been my faithful ___companion for over a decade.

她选择她的密友作为她穿越欧洲漫长旅程的同伴。

She chose her close friend as her ___companion for the long journey across Europe.

他在同事中找到了一位很棒的伙伴，他们兴趣相投。

He found a wonderful ___companion in his colleague, with whom he shared many interests.