单项选择题


A．was taking
B．had taken
C．would take
D．would have taken
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单项选择题
A．PriorB．NextC．AsD．Due
A．Prior
B．Next
C．As
D．Due
单项选择题
A．asB．whenC．so thatD．now that
A．as
B．when
C．so that
D．now that
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