41. A lot of people have tried, but _______ have succeeded.

A. the few B. a few C. some D. few

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

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