What invention do you use every day? Why?, Which invention makes your life easier?, What invention do you think is the most useful at home?, Could you live without a mobile phone? Why or why not?, Which invention do you think changed the world the most?, If you could invent something, what would it be?, What invention do you think people will stop using in the future?, Which invention is more important: the computer or the telephone? Why?, What invention would you take with you to a desert island? Why?, What invention do you think every student needs? Why?

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