补全对话
A: You look upset. What’s the____ ?
B: Oh. I had a big fight with my cousin yesterday.
A: Why?
B: She wanted to ____  my homework.
A: It’s not a good habit. She should do her____  homework.. Well, you could call her up and talk about it____ the phone.
B: She was ____ at me and didn’t talk to me.
A: Don’t worry. I think she will get over it.                   
B: I hope so.

一条单线铁路线上有A，B，C，D，E五个车站，它们之间的路程如下图所示（单位：千米）．两列火车从A，E相向对开，A车先开了3分钟，每小时行60千米，E车每小时行50千米，两车在车站上才能停车，互相让道、错车．两车应该安排在哪一个车站会车（相遇），才能使停车等候的时间最短，先到的火车至少要停车多长时间？