经济危机已经加剧。

The economic crisis has ___deepened.

我的沮丧感加深了，因为前一天我在日记里写了一些关于我父母的诽谤性言论。

My frustration was ___deepened by the fact that the day before I had written in the diary some libellous remarks concerning my parents.

两国之间的冲突正在加剧。

The conflict between the two countries is ___deepening.