Don't tell lies to your boss or you'll be fired at once

9. Don't tell lies to your boss or you'll be fired at once.
10. Don't be impatient or you will make mistakes.
11. Study hard or you won't pass the exam.
>If
12. You must tell me the whole truth or I won't help you.
-> If
13. Unless you promise to return back, I won't lend you.
-> If
14. If you do not like this one, I'll bring you another..
=> Unless
15. I only come if they invite me.
=> Unless