单项选择题

We have ______medical service.

A．priceless
B．free charge
C．no charge
D．free
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单项选择题
It is up to the government to ______the rights of individual citizens.
A．withdraw
B．withhold
C．upgrade
D．uphold
单项选择题
Sick ______she was, she has to prepare food for the whole family.
A．although
B．as
C．because
D．for
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