A Subtle Hint

    Xue Tan took singing lessons from Qin Qing，a famous singer inthe state of Qin．Before learning all that Qing had to teach him，Xue claimed that he had mastered all of Qing's skills and asked to leave．Qing did not try to stop him but gave a farewell dinner for him by a main road in the suburbs There Qing sang a moving song，beating time all the while．The song seemed to shake the trees of the forest and check the drifting clouds in their tracks．Xue Tan immediately apologised to his teacher and asked that he be taken back as a pupil．After this，Xue dared not mention going home again throughout his life．Exercises：
    判断对（T）、错（F）：
    ① Xue Tan asked to leave because he had mastered all the skills．② Qing tried to stop him．③ Xue Tan asked to be taken back as a pupil．④ Xue Tan dared not mention going home again throughout his life．