单项选择题

All the teachers ______ themselves to improve the quality of education.

A．give off
B．give out
C．give away
D．give for
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单项选择题
There are a lot of retired politicians that often ______ with top-dollar law firms in New York.
A．sign on
B．sign away
C．sign in
D．sign off
单项选择题
Fat people should ______ the temptation of sweet things, which are not good to their health.
A．decline
B．clarify
C．oppose
D．resist
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