如果你行为不端，你会受到惩罚——就这么简单。

If you ___misbehave, you will be punished - it's as simple as that.

首先，应向附近所有生活被一些行为不端的学生打扰的居民道歉。

Firstly, an apology is due to all nearby residents whose lives were disturbed by a few somewhat ___misbehaving students.

孩子们累的时候经常行为不端。

Children often ___misbehave when they are tired.