单项选择题

It is ______ in Western countries to give people gifts on their birthdays.

A．coherent
B．customary
C．cooperative
D．cumulative
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单项选择题
She gave ______ directions about the way the rug should be cleaned.
A．acute
B．brisk
C．explicit
D．energetic
单项选择题
The examination question ______ me completely and I couldn't answer it.
A．blocked
B．battered
C．baffled
D．bewared
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