https://online2.tingclass.net/lesson/shi0529/0009/9215/g/4.mp3
https://image.tingclass.net/statics/js/2012
G-4:get one's back up 生气
A:Why did you get your back up, dad?
A:你为什么生气，爸爸?
B:What a mess in your room!
B：瞧瞧你房间多乱。
A:I'm playing with my toys. I'll tidy up the room after a while.
A:我正在玩玩具，过会儿我会把房间收拾好的。
B:That's all right.
B：好吧!
