I. Rewrite, using “unless”: 1. I will buy a car if you lend me some money.  _____________________________________________________ 2. If the book is not expensive, I'll buy it.  _________________________________________________________ 3. I'll go out if it does not rain.  __________________________________________________________________ 4. If she makes that mistake again, her teacher will get angry with me.  _________________________________________________________ 5. I will lend them some money if they ask me.  ____________________________________________________ 6. My dog will bark if it hears any strange sound.  __________________________________________________ 7. They will not let you in if you come late.  ______________________________________________________ 8. He’s waiting for his mother to come back from Chicago. If his mother comes home, he will have a lot of presents. ___________________________________________________________________________________ 9. The kitchen will look better if we have red curtains.  _____________________________________________ 10. If Betty does not like the sweater, she will exchange it.  __________________________________________ 11. You will get much higher marks if you study harder.  _____________________________________________ 12. If he does not ask me , I will not tell him anything.  ______________________________________________ 13. Father will surely get wet if he does not take his umbrella.  __________________________________________ 14. If I am in your place, I will accept his offer.  ______________________________________________________ 15. If it rains, we will stay at home.  _______________________________________________________________ 16. We will ruin our eyes if we read in bad light.  ____________________________________________________ 17. My family will go to Dalat if we have more money.  _______________________________________________ 1. I will tell him this news if I see him. 2.  ___________________________________________________________ 19. If my sister has enough money, she will buy a new house.  __________________________________________ 20. You will have.enough time to eat lunch if you get here early.  _______________________________________