单项选择题

You should be relieving me of duty at 10: 30, but don't hurry if it's inconvenient; I'll hang on till you arrive.

A．turn on
B．look over
C．keep on
D．take over
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单项选择题
You may make good grades by studying only before examinations, but you will succeed eventually only by studying hard every day.
A．in due course
B．in the long run
C．in the main
D．in the first place
单项选择题
Gaining acknowledgement from fellow workers and managers gives a person a sense of importance in society.
A．admittance
B．permission
C．recognition
D．denial
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