单项选择题

Some children are sitting ______the bus on the trip.

A． in front of
B． in the front of
C． before
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单项选择题
It is ______important work, we must finish it in time.
A． such
B． such an
C． so
单项选择题
The nearest hospital is 20 miles ______the village.
A． far away from
B． far from
C． away from
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