单项选择题

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

A．coherent
B．customary
C．cooperative
D．cumulative
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单项选择题
She once again went through her composition carefully to ______ all spelling mistakes in it.
A．withdraw
B．abandon
C．eliminate
D．diminish
单项选择题
When one thing in motion hits another thing, it ______ with it.
A．coincides
B．collides
C．reconciles
D．converges
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