单项选择题

A．in
B．on
C．through
D．for
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单项选择题
A．byB．overC．onD．to
A．by
B．over
C．on
D．to
单项选择题
In the 1970s, ______.
A．many people called for the cancellation of income tax
B．many people questioned the fairness of income tax
C．many people stopped to pay lax because of poverty
D．inflation rose beyond the government's control
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