54. A. attend to B. asked for C. appealed to D. insisted on
53. A. sure B. clear C. likely D. real
52. A. on B. in C. at D. for
51. A. making B. leaving C. forcing D. persuading
50. A. limited B. cured C. happened D. examined
49. A. efforts B. actions C. decisions D. pains
48. A doctors B. authorities C. citizens D. butchers
47. A. which B. them C. whom D. those
46. A. infected B. carried C. touched D. accused
45. A. illnesses B. incidents C. cases D. events
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