单项选择题


A．in turn
B．in exchange
C．in vain
D．in debt
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单项选择题
A．insists onB．consists ofC．persists inD．resists to
A．insists on
B．consists of
C．persists in
D．resists to
单项选择题
A．reliefB．responsibilityC．burdenD．business
A．relief
B．responsibility
C．burden
D．business
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