对囚犯的待遇是极其残忍的。

The treatment of the prisoners was ___inhuman.

重复过去同样可怕的错误是极其残忍的。

It is ___inhuman to repeat the same terrible mistakes from the past.

这位独裁者极其残忍的行为震惊了世界。

The dictator's ___inhuman acts shocked the world.