迷你对话：
A: Where is our son, dear?
亲爱的，我们的儿子在哪里？
B: He is in his bedroom. He has been in a bad mood after school.
他在他的卧室里，放学后，他就一直心情不好。
A: What happened? Have you talked with him?
发生了什么事？你有没有和他谈一谈？
B: Yeah. He told me that he has passed over in the election of monitor.
是的，他告诉我他没有当上班长。
