_______his mother from heavy daily chores, he invented a robot that could use th-组卷网

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_______ his mother from heavy daily chores, he invented a robot that could use the vacuum cleaner, the washing machine and other household appliances.

A．To distinguish

B．To permit

C．To free

D．To chase

22-23高一上·广东深圳·期中

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_______ his mother from heavy daily chores, he invented a robot that could use the vacuum cleaner, the washing machine and other household appliances.

A．To distinguish

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