单项选择题

The secretary is very diligent; ______ she can't get admission of the boss.

A．however
B．therefore
C．so
D．although
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单项选择题
He has worked very hard in this term and ______ he will pass the final exam.
A．eventually
B．yet
C．finally
D．accordingly
单项选择题
Mr. Zhou is ______ an excellent professor.
A．even so
B．ever so
C．ever such
D．so far
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