围绕本课标题 Never too old to learn 活到老学到老（老校长退休）主题，AI 老师会出 若干个简单问题，
每个问题听完后，用 完整句子口头作答。
⚠️ 尽量说完整句子，不要只说一个词；优先用本课句型与词语：I have just received a letter from my old school / informing me that / my former headmaster / will be retiring next week / will be sending him a present / to mark the occasion / have contributed towards the gift / sign their names in a large album / remember Mr. Page for his patience and understanding / the kindly encouragement / went so unwillingly to school / a farewell dinner in his honour / It is a curious coincidence that / will have been teaching for a total of forty years / devote himself to gardening / an entirely new hobby / one is never too old to learn