59. A. complete
s B. engine
s C. taxi
s D.
60. A. difficulties B. enriches C. classes D. enlarges
61. A. character
s B. problem
s C. retreat
s D. universities
62. A. passes B. challenges C. sexes D. tomatoes
63. A. arm
s B. suit
s C. chair
s D. board
s
64. A. lick
s B. risk
s C. lean
s D. drop
s
65. A. relieve
s B. invent
s C. buy
s D. deal
s
66. A. come
s B. roll
s C. take
s D. drive
s
67. A. because B. nurse C. horse D. purpose