单项选择题

In Disneyland, every year, some 800,000 plants are replaced because Disney refused to ______ signs asking his "guests" not to step on them.

A．put down
B．put out
C．put up
D．put off
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单项选择题
You are very selfish. It's high time you ______ that you are not the most important person in the world, Edgar said to his boss angrily.
A．realized
B．have realized
C．realize
D．should realize
单项选择题
To one's boss, an employee should dress neatly, be ______ and show interest in the job.
A．instant
B．timely
C．punctual
D．quick
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