71. A) never
B) ever
C) then
D) before
72. A) up
B) down
C) over
D) out
73. A) merely
B) rarely
C) incidentally
D) accidentally
74. A) surge
B) spur
C) surf
D) splash
75. A) ensued
B) traced
C) followed
D) occurred
76. A) which
B) where
C) what
D) when
77. A) enough
B) certain
C) conclusive
D) final
78. A) but
B) as
C) that