COMPLETE THE EXERCISE WITH IF OR UNLESS. 1. _______________ you drive more carefully, you will have an accident. 2. _______________ you prune these trees, they won’t grow well. 3. He’ll get lost _______________ someone shows him the way. 4. _______________ you practice your Russian, you can improve it quickly. 5. _______________ you don’t hurry, you’ll be late for school again. 6. _______________ there is oxygen, fire cannot burn. 7. _______________ you go to bed late, you’ll feel tired in the morning. 8. My parents will be angry _______________ I pass my exams. 9. You can’t travel abroad _______________ you don’t have a passport. 10. You can’t watch TV _______________ you finish your homework. 11. _______________ they lower the price, I won’t buy that computer. 1. We cannot go sailing _______________ the rain stops. 2. I won't talk to her _______________ she apologizes to me. 3. You won't be able to find the house _______________ you get help from your GPS. 4. I won't go _______________ he is going. 5. _______________ we don’t take the necessary measures now, we may have serious problems later. 6. _______________ you don't take notes you will have hard time studying later. 7. She must have graduated already, _______________ she failed a class. 8. Jason is always cheerful _______________ something really bad happens. 9. I will never forgive you _______________ you tell him the truth. 10. You are not allowed into the casino _______________ you are under 21 years old. 11. My mother will cook _______________ they decide to eat out. 12. I should be there by 11 o'clock _______________ I don't catch any traffic. 13. I should be there by 11 o'clock _______________ I catch a lot of traffic. 14. The show should start at 9:30 _______________ they changed the schedule.

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Complete the following sentences with the words in brackets. 27. A: Let's see. If I _______________ (have) a different family, I _______________ (not grow up) here in Baileyville. B: And if you _______________ (not grow up) here, I _______________ (not meet) you. 28. A: You just don't study enough. If you _______________ (study) more, you _______________ (pass) this course easily this semester. A: That's easy for you to say. You always get A's. 29. If I _______________(be) you, I _______________ (try) to do better on the next test. 30. We _______________enough time if we wanted to see the castle. (have) 31. If you _______________a car, will you teach me to drive? (buy) 32. She _______________angry if you had told her. (get) 33. If they _______________our product when we asked them, they would get a discount now. (support) 34. Even if I _______________him, he won't come. (ask) 35. It will be a disaster unless Joyce _______________us. (help) 36. If you _______________something to eat in the morning, you wouldn't feel sick now. (have) 37. I wouldn't risk it if I _______________you. (be) 38. The chicken isn't very good. It _______________better if you had put some spices on it. (taste) 39. I won't go to the dance unless you _______________me. (join) 40. If the hotel in Paris had been full, we _______________somewhere else. (stay) 41. If I got the job, I _______________grateful to you. (be) 42. Unless she _______________the test she will get her driving licence next week. (fail) 43. How would you explain the meaning of this word if you _______________it? (not know) 44. We _______________angry if you had refused the dinner. (not be) 45. If I were you, I _______________it. (not take) 46. If Ken _______________the car, who will do it? (not mend) 47. If I _______________in a hurry when I got up, I wouldn't catch the train. (not be) 48. She won't finish it on time if she _______________right now. (not start) 49. Had I driven slowly, I _______________. (not crash) 50. She would get fat if she _______________eating. (not stop) 51. Had he not let me know, I _______________him at the airport tomorrow morning. (not collect)

Complete the following sentences with the words in brackets. 1. If it doesn't _______________ (rain), plants cannot grow. 2. If I _______________ (try) to cook, I ruin the food. 3. If you smoke, your skin _______________ (age) more quickly. 4. If you heat ice, it _______________ (melt). 5. I feel good if you _______________ (visit) me regularly. 6. Water evaporates if you _______________ (boil) it. 7. Deren _______________ (cycle) to work if the weather is good. 8. I feel sick if I _______________ (eat) too much chocolate. 9. You need to take my sister to the hospital if she _______________ (drink) milk as she is allergic to it. 10. If Andy _______________ (go) to bed late, he cannot wake up early. 11. If I don't do my homework, my teacher _______________ (get) angry. 12. If I _______________ (be) taller, I _______________ (join) in NBA when I was young. 13. Do you think you _______________ (be) happier now if you (be) someone else. 14. Lucas _______________ (be) in Los Angeles now if he _______________ (take) the flight yesterday. 15. The teacher _______________ (be) so angry now if you _______________ (forget) your homework at home. 16. If you _______________ (go) your office early, you _______________ (be) with us now. 17. I cannot _______________ (see) well if I don't have my glasses. 18. If you study hard enough, you _______________ (get) very good grades. 19. If somebody makes noise in the library, our teacher _______________ (punish) them. 20. If I miss the bus, I _______________ (take) a cab. 21. Coffee _______________ (taste) better if you add sugar. 22. You should _______________ (eat) less if you want to lose weight. 23. I always take my umbrella with me if it _______________ (rain). 24. If you _______________ (press) that button, the car starts. 25. If you _______________ (break) anything, you pay for it. 26. A: We had a great time at Drew's house Sunday. Why didn't you come? B: I had to study for Spanish. A: If you _______________ (come) with us, you _______________ (see) an awesome movie.

Complete the following sentences with the words in brackets. 28. If you (move) _______________ to the UK you would have to learn to speak English. 29. She (not/buy) _______________ it if she didn’t think she needed it. 30. The salad (taste) _______________ better if you added some garlic. 31. We (grow) _______________ our own vegetables if we had a garden. 32. What will you do if the boat (sink) _______________ . 33. When the sun (shine) _______________ I like to lie on the beach. 34. If I _______________ (have) a yacht, I would sail around the world. 35. If David _______________ (be) taller, he could even play in NBA. 36. If you _______________ (be) eighteen years old, you could drive a car. 37. Would you teach me if you _______________ (know) how to ride a bike? 38. If I _______________ (see) a spider, I would scream. 39. If Andrew _______________ (win) the lottery, he would buy a big house for us. 40. I would be so pleased if Jessica _______________ (come) to my party. 41. If Danny really _______________ (love) you, he wouldn't break your heart all the time. 42. Robin could lead a healthier life if she _______________ (give up) smoking. 43. If I _______________ (be) in your shoes, I would change my car. 44. If Pamela _______________ (have) a job, she would be so happy. 45. If he _______________ (speak) more clearly, I would be able to understand him. 46. What would you _______________ (do) if there was a fire at your house? 47. If drivers _______________ (obey) the traffic rules, there would be fewer accidents. 48. If Samantha _______________ (eat) healthier food, she wouldn't have to be on a diet. 49. I would _______________ (make) a delicious sandwich if you were hungry. 50. If I _______________ (know) your phone number, I would call you. 51. How would you feel if you _______________ (lose) your job? 52. If Thomas _______________ (propose) to me, I would say yes at once. 53. If she _______________ (apologize) to me, I would forgive her.

Complete the following sentences with the words in brackets. 1. What would you do if you suddenly (win) _______________ half a million pounds? 2. If he (get up) _______________ up earlier, he'd get to work on time. 3. If we (have) _______________ more time, I could tell you more about it. 4. If you (sell) _______________ more products, you'd earn more money. 5. I could help you if you (trust) _______________ me more. 6. I'd come to your party if I (finish) _______________ my project. 7. I wouldn't be able to do it unless you _______________ (help) me. 8. If it got dark we (not find) _______________ the way. 9. I'd sit down here if you (not mind) _______________. 10. If you turned up the radio we (hear) _______________ the news. 11. If the weather was nice I _______________ (go) out with you. 12. I would tell you the truth if you (not laugh) _______________at me. 13. How much would it cost if we (pay) _______________ in advance? 14. He (cannot go) _______________ to the States unless he asked for a visa. 15. What would you do if you (lose) _______________ your passport? 16. If I missed the bus, (you – take) _______________ me by car? 17. He wouldn't agree with it if it (not be) _______________ fair. 18. His car would be a lot safer if he (buy) _______________ some new tires. 19. The children could be better swimmers if the (go) _______________ swimming more frequently. 20. I wouldn't mind having children if we (live) _______________in the country. 21. If I (be) _______________ you, I wouldn't worry about going to university. 22. If I (have) _______________ any money, I'd give you some. 23. Your parents (be) _______________ a lot happier if you phoned them more often. 24. I (write) _______________ to her if I knew her address. 25. I wouldn’t mind living in this country if the traffic (not/be) _______________ so bad. 26. If I showed you how to open the safe, (you/promise) _______________ not to tell anyone? 27. If the police come looking for you I (say) _______________ you have left the country.