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One evening, while my family were watching TV in the sitting room, my father began to smoke a cigarette (烟草). Soon the room_______full of smoke. Mother asked him to stop smoking, _______，father said it was too difficult. I sat aside and wondered what I could do. Then I had_______idea.

The next day I gave a packet of cigarettes to my father and said something to him in a low quiet voice. Seeing that, Mother looked surprised. Some days_______, mother wondered why father didn’t smoke any longer. Father explained that the cigarettes I had given him were a special kind, which could help people give_______smoking. We all laughed.