从方框中选择恰当的句子完成对话。 A. What does your mother do? B. What do you want to be? C. What does your mother do? D. Because it's boring. E. What about you? F. No, I don't. G. Because it's kind of dangerous. A: Mary, (1) ______ B: She is a shop assistant. A: Do you want to be a shop assistant? B: (2) ______ A: Why don't you want to be a shop assistant? B: (3) ______ A: Then (4) _______ B: I want to be a policewoman. A: A policewoman? Why? B: (5) ______ What about you, Jim? A: Oh, I want to be a teacher because I love school and l love students.