Forms 6a, 6c. Past Simple. Irregular verbs. Making comparisons

 For practicing Past Simple irregular verbs:

https://www.perfect-english-grammar.com/irregular-verbs-exercise-1.html;

https://www.perfect-english-grammar.com/irregular-verbs-exercise-2.html;

https://www.grammarbank.com/simple-past-irregular-verbs.html;

https://www.ego4u.com/en/cram-up/grammar/simple-past/exercises;

https://www.englisch-hilfen.de/en/exercises/tenses/simple_past_mix.htm;

https://www.englishclub.com/grammar/verb-tenses_past_quiz.htm.

For practicing Comparisons:

https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adjectives_comparison_sentences.htm;

https://www.perfect-english-grammar.com/comparative-adjectives-exercise-1.html;

https://elt.oup.com/student/solutions/preint/grammar/grammar_04_012e?cc=lt&selLanguage=en;

https://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/exercises;

https://www.myenglishpages.com/site_php_files/grammar-exercise-grammar-comparatives-superlatives.php.