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Until I took Dr Offutt's class in DeMatha High school, I was an underachieving student, but I left that class【C1】______never to underachieve again. He not only taught me to think, he convinced me, 【C2】______by example as words that it was my moral【C3】______to do so and to serve others. 【C4】______of us could know how our relationship would【C5】______over the years. When I came back to DeMatha to teach English, I worked for Dr Offutt, the department chair. My discussion with him were like graduate seminars in adolescent【C6】______, classroom management and school leadership. After several years, I was【C7】______department chair, and our relationship【C8】______again. I thought that it might be【C9】______chairing the department, since all of my【C10】______English teachers were【C11】______there, but Dr Offutt supported me【C12】______. He knew when to give me advice【C13】______curriculum, texts and personnel, and when to let me【C14】______my own course. In 1997, I needed his【C15】______about leaving DeMatha to become principal at another school. 【C16】______he had asked me to stay at DeMatha, I might have. 【C17】______, he encouraged me to seize the opportunity. Five years ago, I became the principal of DeMatha. 【C18】______, Dr Offutt was there for me, letting me know that I could【C19】______him. I have learned from him that great teachers have an inexhaustible【C20】______of lessons to teach.