42. The students are busy_______ the examination.

　　A. preparing for B. preparing

　　C. to prepare D. to prepare for

　　43. It's high time we _______ something to stop traffic accident.

　　A. do B. will do C. did D. must do

　　44. Encouragement through praise is the most effective method of getting people _______ their best.

　　A. do B. to do C. doing D. done

　　45. I hadn't seen him for years, but I _______ his voice on telephone.

　　A. realized B. discovered

　　C. accepted D. recognized

　　46. Education is not an end but a (n) _______ to an end.

　　A. means B. solution C. measure D. idea

　　47. She believes in the principle _______ to love is to give, not to take.

　　A. how B. which C. that D. what

　　48. If you speak slowly and clearly, the students will _______ the meaning.

　　A. take on B. take down

　　C. take in D. take back

　　49. We can hardly avoid making any mistakes in our work _______ hard we try.

　　A. whatever B. how C. no matter D. however

　　50. The machine can't be made perfect overnight; in fact, it should be improved _______.

　　A. one after another B. by turn

　　C. right away D. step by step

　　51. Move up a little, I haven't any _______ to sit.

　　A. area B. room C. place D. space

　　52. Just as the lion represents strength, the pigeon is _______ peace in general cases.

　　A. associated with B. related to

　　C. connected with D. devoted to

　　53. One should always remember that appearances can be _______.

　　A. wrong B. mistaken

　　C. incorrect D. false

　　54. He was living in France when the war _______.

　　A. broke off B. broke into

　　C. broke out D. broke through

　　55. I enjoy playing basketball and then _______.

　　A. taking a bath B. to take a bath

　　C. take a bath D. took a bath

　　56. He is weak in grammar and sometimes can't even _______ a verb from a noun.

　　A. say B. tell C. speak D. talk

　　57. I suppose you're not serious, _______?

　　A. don't I B. do I

　　C. are you D. aren't you

　　58. Our slogan is "Quantity should never be increased at the _______of quality."

　　A. price B. cost C. value D. wealth

　　59. The news of the air crash is not yet _______ by the government.

　　A. ***mitted B. confirmed

　　C. considered D. concerned

　　60. When Mr. Green retired his son _______ the business.

　　A. took up B. took on

　　C. took over D. took out