For practicing:
REGULAR VERBS
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_ed3.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_ed.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_ed2.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_statements.htm;
IRREGULAR VERBS
https://www.e-grammar.org/past-simple-irregular-verbs-exercise-3/;
https://www.juicyenglish.com/lgvt05-exercise02-simple-past-tense.html;
REGULAR and IRREGULAR VERBS
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_negation_sentences.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_statements2.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_mix.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_mix2.htm;
https://www.e-grammar.org/simple-past-tense-exercises-with-answers/;
https://www.englisch-hilfen.de/en/exercises/tenses/questions_answers_simple_past.htm;
https://www.englisch-hilfen.de/en/exercises/tenses/questions_short_answers_simple_past.htm;
https://www.englisch-hilfen.de/en/exercises/questions/question_words_simple_past.htm.
USED TO
https://www.perfect-english-grammar.com/used-to-exercise-1.html;
https://elt.oup.com/student/solutions/int/grammar/grammar_02_022e?cc=lt&selLanguage=en;
https://www.englishgrammar.org/exercise-8/;
ORDER OF ADJECTIVES
https://www.perfect-english-grammar.com/order-of-adjectives-exercise-1.html;
https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/order.htm;
https://www.englishclub.com/grammar/adjectives-order-quiz.php.
QUIZ: