不规则变化是:  fought

The fiscal crisis has exacerbated the fight .

财政赤字已然恶化了这场斗争。

It shows that the fight is lost .

这表明这场战斗输了。

My fight with mark didn 't end there .

我和马克的争斗并没有到此结束。

But he did not want to fight .

可他并不想去打打杀杀。