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Wherever people have been, they have left waste behind, which can cause all sorts of problems. Wa...

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Children.  Young men.  Old people.  All of abov  
because the Americans want to appear rich  because they are smaller, cheaper and easier to use  because they can help Americans do everything  because 'they can type letters  
had  will have  are having  were having  
computers have been widely used by Americans  computers can solve complex problems  computers are domestic robots  computers are new machines  
Children  Young people  Old people  People of all ages  
what part people have been playing  what part have people played in  what part people have played in  people have been played what part  
Children.  Young men.  Old people.  All of above.  
because the Americans want to appear rich  because they are smaller, cheaper and easier to use  because they can help Americans do everything  because 'they can type letters  
where    wherever    there    that  
It is a kind of computer games.  It is an area.  It is the place where you can play the computer games cheaply.  It is a park.  
what part people have been playing   people have played in   what part people have played in   people have been playing what part  
what part people have been playing    people have played in    what part people have played in    people have been playing what part  
Children.  Young men.  Old people.  All of abov  
writing letters  playing games  doing business  all of the above  
work rapidly  be large and expensive  be easy to use  be used for fun  
Children  Young people  Old people  People of all ages  
computers have been widely used by Americans  computers can solve complex problems  computers are domestic robots  computers are new machines  
where  wherever  there  that  

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