dialogue: W: Hi, Mark, how are you? M: Actually, I am really fed up, Linda. It's Jane. W: Jane? Who's Jane? M: Oh, nobody really. Just a most stunningly attractive girl in my year school. W: Oh, is that all? So what's the problem? M: Well, the thing is I just don't know how to make her notice me. Or .... W: Wait a minute. I've got a brilliant idea. Why don't you try talking to her? M: But I wouldn't know what to say. I .... W: Look. She is in your chemistry class, isn't she? You are good at chemistry. You could offer to help her with her chemistry homework. How about that? M: Not bad. Just one problem. W: What? M: She is better than me at chemistry. W: Ok, then. Well, there is that party at John's at Friday night. You could invite her. M: Just another small problem. John's her boyfriend.
question: Mark is unhappy because of
choice: his Chemistry homework. a girl in his class. Linda's words.
answer: a girl in his class.