孩子们因为不服从老师的指令而被留堂。

The children were kept after school for their ___disobedience to the teacher's instructions.

老师警告学生，不服从指令会导致严重后果。

The teacher warned the students that ___disobedience would lead to serious consequences.

学生们的不服从行为让老师很头疼。

The students' ___disobedience gave the teacher a headache.