Which three inventions in this lesson do you think are the most important?
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Which invention from the ones learnt in this unit could you live without?
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What's the worst invention ever? Why?
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If you could create a machine, which one would you like to invent?
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Which is the craziest invention you have ever heard of?
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Name 3 famous inventors you remember from this unit
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Name 8 objects mentioned in this unit
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