M: Hi, Nice to see you again! W: Hi! I haven't seen you for quite a long time. What are you doing these days? M: I'm taking a country music course. W: Oh, really? How interesting! What are you learning from the course? M: A lot of things, you know, such as the history of country music, singing, and how to play a guitar. W: That's great. Well, talking about country music reminds me of a famous singer, John Denver. Have you ever heard of him? M: Sure. His song "Country reads take me home" is popular both in the USA and in China. W: Yes, that's true. Did you hear the had news about him? M: what was it? W: He had an accident while flying his plane alone, and he was killed. M: That's a big loss for country music., Question: Which of the following is not mentioned? (A) The teacher. (B) A pop star. (C) Playing the guitar.
(A) The teacher.