7. I'm sorry to bring this up at a bad time, but I've decided to study abroad.
我很抱歉在这个时候提出辞职，但我已经决定要出国念书了。
8. To be honest, I've got a better offer.
老实说，我有一个更好的工作机会。
9. I'm running out of steam. I need to take a break.
我精疲力竭了。我需要好好休息。
10. I quit because I want to try something different.
我辞职是因为我想尝试不一样的东西。