People were sitting quietly - some reading newspapers, some lost in thought, some resting with their eyes closed. It was a calm, peaceful scene. Then suddenly, a man and his children entered the subway car. The children were so loud that instantly the whole climate changed. The man sat down next to me and closed his eyes, apparently oblivious to the situation. The children were yelling back and forth, throwing things, even grabbing people's papers. It was very disturbing. And yet, the man sitting next to me did nothing.

① irritated

② relieved

③ self-critical

④ sorrowful

⑤ self-disciplined