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  • Millions of domestic robots ___________(make) since the beginning of the century.
    Millions of domestic robots have been made since the beginning of the century.
  • New technologies which can help with the household tasks ______________ (develop) at the moment.
    New technologies which can help with the household tasks are being developed at the moment.
  • Robots ________________(not use) for household chores in the 1970s.
    Robots were not used for household chores in the 1970s.
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