71. A) involving
B) counting
C) covering
D) figuring(A)
72. A) best
B) least
C) length
D) large(B)
73. A) reserved
B) hard-working
C) polite
D) frank(D)
74. A) over
B) at
C) on
D) of(C)
75. A) presented
B) submitted
C) described
D) written(A)
76. A) received
B) addressed
C) made
D) taken(C)
77. A) occasion
B) truth
C) case
D) fact(D)
78. A) on
B) about
C) at
D) with(B)
79. A) though
B) whether
C) as
D) if(B)
80. A) dissatisfied
B) unsatisfactory
C) satisfied
D) satisfactory(A)