单项选择题

Mary will not be able to come to the birthday party as she is ______ with a cold.

A．laid out
B．laid up
C．laid by
D．laid down
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单项选择题
That fellow ______ at long distance running.
A．excels
B．exceeds
C．surpasses
D．overtakes
单项选择题
As I regard it, you can widen the ______ of these improvements through your active participation.
A．volume
B．dimension
C．magnitude
D．scope
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