Use conditional sentences type 2 to rewrite the sentences below. 41. You don’t save electricity. You pay a lot of money.  42. We don’t have enough money, so we don’t buy those new comics.  43. She is not free today, so she can’t go to the movie with her friends.  44. He is so lazy. He fails the final exam.  45. The weather is not fine. The children don’t play outdoors.  46. Thu cannot swim, so she doesn’t go to the swimming pool with her friends.  47. People don’t see the UFO, so they don’t call the National UFO Reporting Centre.  48. She doesn’t keep the refrigerator door closed, so she cannot save the energy.  49. There is much traffic, so the air is polluted by the waste smoke.  50. Ba isn’t fast enough to catch the school bus. 

Rewrite the following sentences as directed. 36. Ba isn’t rich. He won’t travel around the world. => If Ba were ____________ 37. I’m not rich, so I can’t buy that house. => If I were _______________ 38. I can’t give you a ride because I do’t have a motorbike. => If I had _______________ 39. Water these plants or they will die. => If you don’t _____________ 40. Hurry up or we’ll be late for the concert. => I we don’t ____________

Give a suitable preposition to each gap below. 31. There were more than 1,500 UFO sightings _______the world in 1952. 32. He saw a plate-like device_______ the treetop. 33. There is still evidence ______people to believe_______ the existence of UFOs. 34. You will weigh 8 kilos heavier _______the moon. 35. You must get a letter _______the doctor that shows you are_______ perfect health.

Give the correct form of the verbs in brackets. 25. If he ________________free time, he would go swimming. (have) 26. If I had much money, I ________________a new car. (buy) 27. If the weather ________________cool, the bananas wouldn’t spoil. (be) 28. If Ba were rich, he ________________travel around the world. (travel) 29. What would you do if you ________________a UFO? (see) 30. If you can’t find your place, I ________________you get there with this map. (help)

Choose the best option to complete each of the following sentences. 1. UFOs means ________flying objects. A. unknown B. unidentified C. unable D. unimaginary 2. The man ________without trace. A. disappeared B. disappearing C. appeared D. appearing 3. He is an ________pilot. A. experience B. experiment C. experienced D. experient 4. When a ________enters the earth’s atmosphere it makes a bright line in the night sky. A. moon B. UFO C. balloon D. meteor 5. Scientists say that if people see a UFO, it ________an aircraft. A. must be B. would be C. might be D. should be 6. Some scientists say that flying saucers might be people’s ________. A. imagination B. imagine C. imaginative D. imaginary 7. My parents did not allow me ________, so I had to stay at home. A. go B. to go C. going D. gone 8. Do you think you will be able ________a space trip A. take B. to take C. taking D. taken 9. If there were flying saucers, there ________traces of there landing. A. would be B. will be C. are D. is 10. If I ________a bird, I would be a dove. A. am B. is C. are D. were 11. She would come to see you if she ________your address. A. have B. has C. had D. having 12. Where ________you go if you had a lot of money? A. will B. would C. do D. can 13. Do you believe ________the existence of UFOs? A. on B. in C. at D. for 14. If we became rich, we would travel ________the world. A. on B. at C. in D. around 15. She was absolutely terrified ________the thought of jumping off the bridge. A. of B. with C. about D. on 16. After having a baby, a woman may ________from depression for several months. A. suffers B. suffering C. suffer D. suffered 17. If I ________wings, I wouldn’t have to take an airplane to fly home. A. had B. have C. will have D. didn’t have 18. You may also find your country and other ________places. A. interested B. uninteresting C. interest D. interesting 19. The ________is due to take off at midnight. A. airmail B. aircraft C. airport D. airline 20. There's someone at the door. Perhaps it's Peter. Peter ________at the door. A. should be B. may be C. must be D. will be 21. When you are in orbit, you'll be out of the earth's ________you're weightless. A. outside B. gravity C. atmosphere D. outskirt 22. Paul likes planting flowers. When he grows up he ________a gardener. A. will be B. should be C. might be D. must be 23. Hoa can't go with us ________she has to look after her little sister. A. because B. moreover C. as for D. therefore 24. The argument was far from________. A. conclude B. conclusive C. conclusion D. concluding