单项选择题

In previous time, when fresh meat was in short __________, pigeons were kept by many households as a source of food.

A．storage
B．reserve
C．supply
D．provision
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单项选择题
I was in some doubt as to whether the Corporal had __________ us accidentally on his way out of the town or if he'd been deliberately tasked.
A．crashed on
B．bumped into
C．fallen against
D．puzzled about
单项选择题
Students at these schools test far below the state average in reading, and their scores have improved only __________.
A．marginally
B．marvelously
C．martially
D．markably
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