https://www.lewolang.com/gramatica-inglesa/24/adverbs-of-frequency
https://www.grammar.cl/Basic/Adverbs_Frequency.htm
https://agendaweb.org/grammar/adverbs-exercises.html
https://es.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Adverbs_of_frequency/Adverb_of_Frequency_rb1284624gi
https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm
https://www.curso-ingles.com/aprender/cursos/nivel-intermedio/comparative-superlative/comparatives-and-superlatives
https://grammar.collinsdictionary.com/es/gramatica-de-aprendizaje-espanol/comparatives-and-superlatives-of-adjectives
https://www.superprof.es/apuntes/idiomas/ingles/gramatica-inglesa/adjectives/comparative-adjectives.html
https://agendaweb.org/grammar/comparison-exercises.html
https://www.undp.org/content/undp/es/home/sustainable-development-goals/goal-5-gender-equality.html
https://www.vskills.in/practice/gender-equality-awareness-mock-test
https://www.myenglishpages.com/english/reading_women.php