B) which
C) whose
D) what
68. A) for
B) with
C) in
D) on
69. A) spends
B) takes
C) lasts
D) consumes
70. A) mode
B) copy
C) sample
D)model
71. A) cause
B) make
C) leave
D) prove
72. A) adopt
B) lay
C) stick
D) adapt
73. A)reserve
B) decorate
C) store
D) keep
74. A) products
B) possession
C) material
D) ownership
75. A) run
B) interval
C) period
D) time
76. A) appliance
B) equipment
C) utility
D) facility
77. A) function
B) purpose
C) goal
D) task
78. A) component
B) element
C) item
D) particle
79. A) what
B) which
C) that
D) this
80. A) of
B) in
C) by
D) from