他威胁要起诉公司不正当解雇。

He threatened to ___sue the company for wrongful dismissal.

如果问题得不到解决，我将毫不犹豫地提起诉讼。

I will not hesitate to ___sue if the issue is not resolved.

受伤的一方决定起诉要求赔偿。

The injured party decided to ___sue for damages.