It was a Sunday morning on a subway in New York. People were sitting _______— some reading newspapers, some lost in thought, some resting with their eyes closed. It was a calm, peaceful scene. Then _______ , a man and his children entered the subway car. The children were so _________and active that the whole _______ of the car instantly changed.The man sat down next to me and closed his eyes, apparently （显然）_______ of the situation. The children were yelling and _______ things, and yet, the man sitting next to me did nothing.It was difficult not to feel _______ . I couldn't believe