57. robots / use / slaves , therefore , / free / people / do / more of the things / want.
A. Robots used slaves, therefore, people freeing them to do more of the things they want.
B. Robots would be used like slaves, therefore, free people can do more of the things they want.
C. Robots would be used as slaves, therefore, freeing people to do more of the things they want.
D. Robots use is like slaves, therefore, free people do for them more of the things they want.
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