https://myblog-inplainenglish.blogspot.com/2018/12/present-perfect-simple.html
https://myblog-inplainenglish.blogspot.com/2014/10/simple-past-or-present-perfect.html
https://www.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Present_perfect/Present_Perfect*_since_and_for_te221913zd
https://english.lingolia.com/it/grammatica/tempi/present-perfect-simple
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