Extra exercises
- https://www.engblocks.com/grammar/exercises/tenses/past-simple-irregular-verbs-exercise-2/
- https://www.engblocks.com/grammar/exercises/tenses/past-simple-irregular-verbs-exercise-1/
- https://www.engblocks.com/grammar/exercises/tenses/past-simple-irregular-verbs-exercise-3/
- https://www.perfect-english-grammar.com//irregular-verbs-exercise-2.html
- https://www.perfect-english-grammar.com/irregular-verbs-exercise-1.htm
- https://first-english.org/english_learning/english_tenses/simple_past/2/12_simple_past_irregular_verbs_exercises.htm
- https://elt.oup.com/student/solutions/elementary/grammar/grammar_07_012e?cc=global&selLanguage=en