单项选择题

No one hopes that he will ______ his usefulness.

A．retain
B．keep
C．prolong
D．survive
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Sick ______ she is, she goes to work as usual.
A．though
B．since
C．for
D．as
单项选择题
I ______ that he is too young to he promoted.
A．object
B．disagree
C．disapprove
D．dislike
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