罗马帝国在公元一世纪征服了不列颠。

The Roman Empire ___conquered Britain in the first century AD.

经过几个月的努力，他终于克服了对游泳的恐惧。

After months of effort, he finally ___conquered his fear of swimming.

这款饮料迅速征服了年轻人的市场。

This drink quickly ___conquers the youth market.