https://online2.tingclass.net/lesson/shi0529/10000/10118/773.MP3
https://image.tingclass.net/statics/js/2012
pay back 还钱
I promise I'll pay you back. 我发誓，我肯定会还你的。
You can pay me back whenever you like. 你想什么时候还，就什么时候还。
I pay you back all the money you invested. 我会一分不差地把你投资的钱还给你。
You don't have to pay me back. 你不需要还我钱。
Do you promise to pay me back? 你发誓能还我钱吗?
You have my word. 我保证。
