PAST CONTINUOUS

https://test-english.com/grammar-points/a2/past-continuous-past-simple/

https://www.ecenglish.com/learnenglish/lessons/past-simple-vs-past-continuous

https://ensenar-espanol-online.com/como-ensenar-conectores-espanol/

COMPARATIVES AND SUPERLATIVES

https://learnenglish.britishcouncil.org/grammar/english-grammar-reference/comparative-superlative-adjectives

https://test-english.com/grammar-points/b1/comparative-superlative-adjectives-adverbs/

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