单项选择题

We should make a clear ______ between "competent" and "proficient".

A. separation
B. division
C. distinction
D. difference
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单项选择题
The very essence of civil liberty consists in the light of every individual to claim the protection of laws ______ he receives an injury.
A. whenever
B. wherever
C. whereas
D. whichever
单项选择题
—I think you ought to have your paper finished. —Yes, I ______.
A. would
B. ought
C. should
D. should have
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