我实在找不到理由再请一天假。

I can't really ___justify taking another day off work.

你确定这些代价高昂的措施是合理的吗？

Are you sure that these costly measures are ___justified?

对成功的渴望并不能成为粗鲁行为的正当理由。

A desire for success does not ___justify rude behavior.