PRESENT PERFECT AND PAST SIMPLE

Exercises
https://www.ego4u.com/en/cram-up/grammar/simpas-preper
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_present_perfect.htm
https://elt.oup.com/student/solutions/preint/grammar/grammar_05_022e?cc=global&selLanguage=en
http://www.saberingles.com.ar/curso/lesson21/06.html