settle down|settled down

他没花多长时间就在新学校适应了。

It didn't take him long to ___settle ___down at his new school.

我很高兴你在新城市适应得这么好。

I'm glad you've ___settled ___down so well in your new city.

她很快就在新工作中安顿/适应了下来。

She quickly ___settled ___down in her new job.