单项选择题

To maintain public ______ is not only the policemen's duty but also every citizen's responsibility.

A．custom
B．confidence
C．security
D．simplicity
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单项选择题
There is a sale at Hamfridge's next week with ______ in all departments.
A．decreases
B．subtractions
C．reductions
D．accounts
单项选择题
If I may be so ______ as to advise you, my opinion is that you should not reply to his letter.
A．generous
B．humble
C．proud
D．bold
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