sentence: For instance , there are many studies by various bodies in the US showing that more and more teenagers are spending most of their time in front of the TV or computer playing video games . They hardly do any sort of physical activity and also indulge in fast food .
modified: For instance , there are many studies by various bodies in the US show that more and more teenagers are spending most of their time in front of TV or computer playing video games , they hardly perform any sort of physical activity and also indulge in fast food .
transformation: VERB:FORM, DET, PUNCT, VERB