There are home robots, teaching robots, worker robots, doctor robots and space robots.
I think home robots will be able to guard our house. They will be able to recognize our faces and if they find someone strange, they will sound an alarm to warn us. About education, teaching robots will be able to help students study many subjects like Maths, Literature, English and Geography. In my opinion, worker robots will be able to do dangerous works such as building our buildings, skyscrapers and bridges. About health, doctor robots and nurse robots will be able to examine sick people, take cafe of the injured and give them prescriptions. Space robots will be able to make surveys or inspect on other planets in order to know how they are. 

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Robots will be very useful in the future. It will be able to do almost everything. But it won't be able to do things like express feelings, or thinking. However, housework and heavy works like building a house will be done by robots. I don't think robots will be able to do works without human's control anyway. And maybe they can talk. That probably sentences which were programmed in it. Maybe it even don't understand what it say