单项选择题

It is vital that food and shelter are made ______ for people in the flood-stricken area.

A．free
B．useful
C．available
D．usable
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______ that called this morning
A．Who was
B．Who it was
C．Who was him
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We are planning to make a ______ to the Great Wall.
A．trip
B．journey
C．travel
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