[B] wonder
[C] undertake
[D] learn
72. [A] terrible
[B] unreliable
[C] unsolvable
[D] advisable
73. [A] other
[B] some
[C] others
[D] another
74. [A] up
[B] down
[C] toward
[D] aside
75. [A] crush
[B] brush
[C] push
[D] rush考试网
76. [A] following
[B] returning
[C] flowing
[D] pouring
77. [A] healthy
[B] swollen
[C] dreary
[D] radical