单项选择题

You have to be patient if you want to sustain your position.

A. maintain
B. establish
C. acquire
D. support
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单项选择题
He is renowned for his skill.
A. remembered
B. recommended
C. praised
D. well-known
单项选择题
It’s prudent to start any exercise program gradually at first.
A. workable
B. sensible
C. possible
D. feasible
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