对待孩子你必须坚决。

You've got to be ___firm with children.

作为一名军官，我父亲对我和我姐姐相当严格。

Being an officer, my father was rather ___firm with my sister and me.

一位好的经理需要在执行公司政策时保持坚决。

A good manager needs to be ___firm in enforcing company policies.