Extra practice: mixed exercises
- https://www.perfect-english-grammar.com/past-simple-exercise-8.html
- https://www.perfect-english-grammar.com/past-simple-exercise-7.html
- https://www.perfect-english-grammar.com/past-simple-exercise-9.html
- https://www.perfect-english-grammar.com/past-simple-exercise-10.html
- https://agendaweb.org/exercises/verbs/past-simple/affirmative-negative-questions
- https://agendaweb.org/exercises/verbs/past-simple/irregular-affirmative-negative-interrogative-write-3
- https://www.engblocks.com/grammar/exercises/tenses/past-simple-mixed/
- https://www.e-grammar.org/past-simple-mixed-exercises/
- https://taalhulp-engels.com/en/exercises/past-simple-mixed-exercise-5/?utm_content=cmp-true
- https://test-english.com/grammar-points/a1/past-simple-regular-irregular/