单项选择题

All the reference books should be made ______ to the teachers and students in our university.

A．concerned
B．available
C．related
D．flexible
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单项选择题
Don't risk ______ the job which so many people want.
A．losing
B．to lose
C．lost
D．your life to lose
单项选择题
He had been ______ to give up much of his time to housework.
A．ordered
B．persuaded
C．compelled
D．frightened
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