单项选择题

The prisoner was ________ in his attempt to escape by a watchful guard.

A．frustrated
B．distressed
C．discouraged
D．accomplished
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单项选择题
For the success of the project, the company, should ________ the most of the opportunities at hand.
A．obtain
B．grasp
C．catch
D．make
单项选择题
The last five years have seen a(n) ________ improvement in the country's economy.
A．relevant
B．insistent
C．consistent
D．practical
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