unit 2
    21. He was very busy yesterday; otherwise he___ to the meeting.
    A. would have ***e B. would ***e C. could ***e D. had ***e
    22. You can't hear what I'm saying ____ you stop talking.
    A. only if B. unless C. lest D. except that
    23. Sorry I can't answer your question. I know____ about the subject.
    A. a little B. some C. little D. few
    24. I ____ get this done immediately or it will be too late.
    A. must B. can C. may D. might
    25. He____ working till he was seventy years old.
    A. kept up B. kept on C. kept to D. kept out
    26. You ought to take every___ of improving your English.
    A. time B. thing C. chance D. case
    27. ____ from space, our earth, with water covering 70% of its surface, appears as a "blue pla***".
    A. Seen B. Seeing C. To be seen D. Having seen
    28. The novel ended happily, and the young couple was married____.
    A. in the final B. in the end C. 'to the last D. in conclusion
    29. The building___ mostly undamaged after the earthquake, and only minor repairs were necessary.
    A. discovered B. lasted C. consisted D. remained
    30. He is an honest official and never any gifts from people who sought his help.
    A. received B. accepted C. expected D. took up
    31. He stood waving until the train was out of _____.
    A. sight B. glimpse C. scene D. reach
    32. It is important to____ people with respect and understanding.
    A. treat B. attend C. care D. touch
    33. The preparations for the trip will be____ till next week.
    A. put out B. put over C. put off D. put up
    34. Parking is a big problem____.
    A. the traffic is so B. is so the traffic
    C. so the traffic is D. so is the traffic
    35. Nobody can be set in motion without a force _____ on it.
    A. act B. to act C. acting D. acted
    36. I know a number of occasions____ people died from water pollution.
    A. how B. as C. when D. where
    37. Dirty water must not be _____ with drinking water.
    A. joined B. linked C. mixed D. ***bined
    38. The main road through the city was blocked for three hours today after an accident__ __ two buses.
    A. containing B. connecting C. including D. involving
    39. Will you go to the meeting ____ visiting the museum please?
    A. or B. and C. to D. instead of
    40. Smith is to study medicine as soon as he ____ military service.
    A. will finish B. has finished C. finish D. would finish
    41. If a metal bar is heated, the greater the heat ____, the larger the expansion.
    A. applied B. being applied C. applying D. is applied
    42. They did not discover until later____ the car had been destroyed.
    A. as B. than C. which D. that
    43. He has already made up his mind. It's no use ____ him.
    A. try to persuade B. trying to persuade
    C. to try to persuade D. to try persuading
    44. It is much easier to talk about social change than____.
    A. to bring it about B. to bring it on C. to bring it up D. to bring it out
    45. ____ seems easy in theory seems difficult in practice.
    A. That B. With C. What D. It
    46. The house is dark; the Browns_____ to bed.
    A. may go B. should go
    C. should have gone D. must have gone
    47. This is a mistake which is typical ____ beginners.
    A. for B. of C. to D. with
    48. There may be, somewhere outside the solar system, intelligent life ____ messages to us.
    A. sends B. sent C. sending D. has sent
    49. Please be sure to telephone me the next time you____.
    A. will ***e B. would ***e C. shall ***e D. ***e
    50. All the machines____ by the end of the following week.
    A. were repaired B. will be repaired
    C. have been repaired D. will have been repaired
    51____ is well known, light, like heat, is a form of energy.
    A. It B. what C. Just as D. As
    52. You should turn off all the water tonight ____ freezes and the pipes burst.
    A. in some cases it B. in case it C. in that case it D. in any case it
    53. Music often____ us of events in the past.
    A. reminds B. memorizes C. remembers D. reflects
    54. He didn't know I was in his office. He was too busy to____ me.
    A. pay attention to B. notice C. know D. realize
    55. Does it____ much to have the bicycle repaired?
    A. pay B. spend C. cost D. ask
    56. You should act _____ the advice of your doctor.
    A. to B. on C. at D. as
    57. There was a teapot fashioned like a China duck, out of ____ open mouth the tea was supposed to ***e
    A. which B. its C. that D. whose
    58. Beijing is now busy___ the Olympic Games which is to be held in the year 2000.
    A. preparing for B. prepared for C. to prepare for D. prepare for
    59. The scientist didn't mind ____and went on with his investigation.
    A. laughing at B. to be laughed at
    C. being laughed at D. laughed at
    60. If you____ that late movie last night, you wouldn't be so sleepy.
    A. hadn't watched B. haven't watched
    C. wouldn't have watched D. didn't watch