Practice

 https://agendaweb.org/exercises/verbs/to-be/past-simple-forms

https://agendaweb.org/exercises/verbs/to-be/past-simple-write-2

https://agendaweb.org/exercises/verbs/to-be/past-simple-affirmative-negative-interrogative

https://www.grammarbank.com/simple-past-tense-regular-exercise.html

https://www.englisch-hilfen.de/en/exercises/questions/simple_past.htm