71. A) very
B) exact
C) right
D) usual(A)
72. A) officials
B) parents
C) experts
D) schools(B)
73. A) Also
B) Even
C) Then
D) However(B)
74. A) fatigue
B) confusion
C) duty
D) puzzle(A)
75. A) there
B) we
C) they
D) it(D)
76. A) via
B) under
C) by
D) for(C)
77. A) questions
B) answers
C) standards
D) rules(B)
78. A) off
B) without
C) beyond
D) from(D)
79. A) single
B) piece
C) page
D) other(A)
80. A) drop
B) short
C) cut
D) lack(D)