单项选择题

The factory had to ______ a number of employees because of the economic crisis in the country.

A．lay out
B．lay off
C．lay aside
D．lay down
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单项选择题
The evening news comes on at seven o'clock and ______ only thirty minutes.
A．keeps
B．continues
C．finishes
D．lasts
单项选择题
They started off late and got to the airport with minutes to ______.
A．spare
B．catch
C．leave
D．make
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