单项选择题

No matter where it is used, "Flextime" system has proved ______.

A．entirely effective
B．a complete failure
C．to be disliked by the employers
D．too difficult to carry out
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单项选择题
Flexible working hours were firstly used by the ______.
A．British
B．Americans
C．Germans
D．Japanese
单项选择题
They asked her to ______ the facts as she remembered them.
A．set up
B．set off
C．set aside
D．set down
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