单项选择题

There is no danger. Please keep（）.

A.calm
B.silent
C.quiet
D.peaceful

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单项选择题

It seems（）to change the timetable so often.

A.unlogical
B.imlogical
C.inlogical
D.illogical

单项选择题

It is not（）to behave this way.

A.civilising
B.civilise
C.civilised
D.tocivilise

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