COMPARISONS BETWEEN CLAUSES

https://www.englishgrammar.org/comparatives-exercise-2/

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

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

https://www.gamestolearnenglish.com/comparatives/