sentence: Nowadays , in school , we learn a lot of subjects which we use more or less in our lives . Some of them are really important , but some of them are just a waste of time .
modified: Nowdays , in school we learn a lot of subjects , which we less or more use in our lives , some of them are really important , but some of them are just wasting of time .
transformation: SPELL, PUNCT, PUNCT, WO, PUNCT, DET, MORPH