There was a shortage of workers on American farms．,The -找考题网

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A．There was a shortage of workers on American farms.
B．The most important of the early inventions was the iron plow.
C．After 1869, many people devoted their attention to the plow.
D．Charles Newbold had made a fortune by his cast-iron plow.

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A．They will go out walking.B．They just sleep.C．They light candles and carry on with what they were doing before.D．They go out to have a visit of their friends.

A．They will go out walking.
B．They just sleep.
C．They light candles and carry on with what they were doing before.
D．They go out to have a visit of their friends.

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