71. [A] that
[B] this
[C] those
[D] these
72. [A] when
[B] how
[C] what
[D] where
73. [A] common
[B] ordinary外语学习网
[C] standard
[D] average
74.
[A] Still
[B] However
[C] Moreover
[D] Whereas
75. [A] before
[B] ago
[C] later
[D] lately