他的状况在上周突然恶化了。

His condition suddenly ___worsened last week.

我认为在那里修建停车场可能会使交通问题急剧恶化。

I believe that building a car park there could ___worsen the traffic problem drastically.

政府的不作为很可能会加剧经济危机。

The government's inaction is likely to ___worsen the economic crisis.