单项选择题

A．questions
B．answers
C．standards
D．rules
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单项选择题
A．thereB．weC．theyD．it
A．there
B．we
C．they
D．it
单项选择题
A．previouslyB．rarelyC．merelyD．consistently
A．previously
B．rarely
C．merely
D．consistently
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