sentence: Since then , I have attended a course for the preparation for the CAE exam , and spent two weeks in Ireland during the summer working as a babysitter , so I have had experience working with children .
modified: Since then I have attended a course for the preparation of the CAE exam , and spent two weeks in Ireland during the Summer working as a babysitter , so I have had experience working with children .
transformation: PUNCT, PREP, ORTH