9. Don't tell lies to your boss or you'll be fired at once. -> If 10. Don't be impatient or you will make mistakes. - If 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
