他经常行为暴力，他们都很怕他。

He often behaved ___violently and they were terrified of him.

他声称在监狱里遭到了暴力袭击。

He claimed to have been ___violently assaulted while in prison.

有时他们因为被监禁而行为暴力。

Sometimes they behave ___violently because of their imprisonment.