UNIT 10: LIFE ON OTHER PLANETS

Choose the best option to complete each of the following sentences.1. UFOs means ________flying objects.

A. unknown B. unidentified C. unable D. unimaginary2. The man ________without trace.

A. disappeared B. disappearing C. appeared D. appearing3. He is an ________pilot.

A. experience B. experiment C. experienced D. experient4. When a ________enters the earth’s atmosphere it makes a bright line in the night sky.

A. moon B. UFO C. balloon D. meteor5. 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. imaginary7. My parents did not allow me ________, so I had to stay at home.

A. go B. to go C. going D. gone8. Do you think you will be able ________a space trip

A. take B. to take C. taking D. taken9. If there were flying saucers, there ________traces of there landing.

A. would be B. will be C. are D. is10. If I ________a bird, I would be a dove.

A. am B. is C. are D. were11. She would come to see you if she ________your address.

A. have B. has C. had D. having12. Where ________you go if you had a lot of money?

A. will B. would C. do D. can13. Do you believe ________the existence of UFOs?

A. on B. in C. at D. for14. If we became rich, we would travel ________the world.

A. on B. at C. in D. around15. She was absolutely terrified ________the thought of jumping off the bridge.

A. of B. with C. about D. on16. After having a baby, a woman may ________from depression for several months.

A. suffers B. suffering C. suffer D. suffered17. If I ________wings, I wouldn’t have to take an airplane to fly home.

A. had B. have C. will have D. didn’t have18. You may also find your country and other ________places.

A. interested B. uninteresting C. interest D. interesting19. The ________is due to take off at midnight.

A. airmail B. aircraft C. airport D. airline20. 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 be21. When you are in orbit, you'll be out of the earth's ________you're weightless.

A. outside B. gravity C. atmosphere D. outskirt22. Paul likes planting flowers. When he grows up he ________a gardener.

A. will be B. should be C. might be D. must be23. Hoa can't go with us ________she has to look after her little sister.

A. because B. moreover C. as for D. therefore24. The argument was far from________.

A. conclude B. conclusive C. conclusion D. concludingGive 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)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.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 ____________________________________________________________________________ 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.

_____________________________________________________________________________________ Fill in each blank with a suitable word in the box.

--planet – aircraft – objects – sky – meteor – spacecraft – UFO – in--

UFOs are strange flying ______(51) that some people report that they have seen in the ______(52) and believe to be ______(53) from another ______(54) Many scientists do not believe so. They say if people see a ______(55), it might be an ______(56), a weather balloon or a ______(57). However, there is still evidence for people to believe ______(58) the existence of UFOs.