结婚后，他们决定安定下来，在郊区买了房子。

After getting married, they decided to start ___settling down and bought a house in the suburbs.

老师进来后，吵闹的班级终于安静下来了。

The noisy class finally ___settled down after the teacher entered.

他们决定安定下来，明年结婚。

They've decided on ___settling down and getting married next year.