https://www.focus.olsztyn.pl/en-present-perfect-continuous-for-since.html
https://www.grammar.cl/Games/For_Since.htm
https://www.engblocks.com/grammar/exercises/tenses/present-perfect-since-for-exercise-2/
https://www.grammarism.com/present-perfect-with-for-since-exercises/
https://www.grammarism.com/present-perfect-with-for-since-exercises/?qid=785171
https://www.focus.olsztyn.pl/en-present-perfect-english-exercises.html
https://test-english.com/grammar-points/a2/present-perfect/ (There are 4 exercises)
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