根据对话内容，选择恰当的句子补全下列对话。 Ann: Hello, Sam. 1.______ How are you doing? Sam: Fine. Thank you. And you? Ann: Pretty good. I was told that you would finish your middle school study. 2.______ Sam: I'm going to study the computer in the college. 3.______ Ann: My parents are hoping I will go to the music school, but I'm not sure. Sam: 4.______ Ann: Yes, I do love it. But I hate having to study music theory (理论). Sam: Why don't you ask your music teacher for advice? Ann: 5.______ A. What about you? B. That's a good idea. C. I haven't seen you for along time. D. Have you seen your music teacher? E. I know you like playing the violin, don't you? F. It's two years since I study music theory. G. What are you going to do after middle school?