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Airplanes that used to take more than half a day to cross the Atlantic are now to make it in s...

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are used to take a walk, am used to swim
   
are used to taking a walk, am used to swimming
   
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Aluminum is widely used in transportation.  Aluminum is also used in many parts of airplanes.  Aluminum is being used extensively in the building industry.  Aluminum is not used in its pure form.  
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used to taking  used to take  is used to take  was used to taking  

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