1. If they ………. after the environment around popular tourist destination, they will lose their appeal. ( آذر 98)

2. The children won’t go to sleep …………….. we leave a light on outside their bedrooms. ( شهریور 98 )

3. There will be severe climate change …….………. people don’t recognize the dangers of global warming. (تیر98)

4. Do you get green or orange if you …… yellow and blue? (مهر 98)

5. Students will receive extra credit…… they hand in their projects early. (مهر 98)

6. Unless you ……… diligently, you’ll never understand quantum physics. ( بهمن 98)

7. I won’t lend you my car …………… you promise to drive carefully. (خرداد 98)

8. If global warming causes the ocean level to rise, ………….. World will suffer. (اردیبهشت 98)

9. If you want, he ……… with you to the store. ( آذر 97)

10. I’ll be back tomorrow ……… there is a plane strike. (آذر 97)

11. If you help me with the dishes, I ……… you with your homework. (آذر 97)

12………….  you have money in your account, you can withdraw up to 2,000 Rials a day. (خرداد 99)

13. …………… you keep ice away from the sun, it melts

14. We can’t let you in …………… you have a valid library card. (شهریور 99)

15. If I knew you were busy on Wednesday, I …………….. another day for the meeting. (تیر98)

16. John wouldn’t tell me a secret like this if he …………. me. ( دی 98)

17. If I …….. you, I wouldn’t risk it. (مهر 98)

18. I wouldn’t buy the car …… I had the money. ( دی 98)

19. If you ……………… learn, I would show you how to operate that machine. (اسفند 97)

20. I wouldn’t buy you a computer …………….. I had the money. (خرداد 98)

21. If he………. out the plug while the current was on, he would get an electric shock. (خرداد 99)

18. . …………… that his cousin liked Chelo-Kebab, he would have taken him out to an Iranian restaurant. ( شهریور 98 )

19. I ……….. you a present if I had known you graduated from college. ( بهمن 98)

20. If I had listened to the weather forecast, I ……… the plants. ( آذر 98)

21. If my cousin had waited another month, he could probably ….. a better price for the apartment. (مهر 98)

22. ……..…. for my supervisor’s help, I could not have finished my PhD dissertation. (مهر 98)

23. We ……………… you our help if you had asked for it. (اسفند 97)

24. ……… not seen it with my own eyes, I wouldn’t have believed it. ( آذر 98)

25. ………. for my father’s help, I could not have bought this computer.

 ( دی 98)

26. My friend was selling his old laptop at a very low price; I ……….…….. it if I had not been completely broke at the time. (تیر98)

27. They …………….. more pleased if you had told them the news yourself. (خرداد 98)

28. Mr. Johnson ……………. the painting if he had realized that wasn’t actually an original copy. (خرداد 98)

33. John would have repaired the car himself if he …………… the proper tools. (مرداد 99)

34.  I wouldn’t have bought the computer if I …………… that it was actually a used one. (شهریور 99)

35. …………… resigned, they would have been forced to fire him. (شهریور 99)

36. I wish Jim………………… harder when he was at school. ( خرداد 99)

37. I wish I …………… more seriously at high school. (مرداد 99)

38. I wish I ………….. Jim that he had not been chosen for the baseball team. (اردیبهشت98)

39. I wish John ………… me how the film ends. He has spoiled it for me. (تیر98)

40. I wish I ……………. a report on my project to the class every week (خرداد 98).