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https://www.myenglishpages.com/site_php_files/grammar-exercise-simple-present.php

https://www.ego4u.com/en/cram-up/tests/simple-present-1

https://www.english-4u.de/en/grammar/present-simple.htm

http://www.mansioningles.com/gram09.htm

https://www.curso-ingles.com/aprender/cursos/nivel-basico/adjectives/adjectives

https://agendaweb.org/grammar/adjectives-exercises.html

https://agendaweb.org/grammar/comparison-exercises.html

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

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

https://es.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Comparatives_and_superlatives/Comparative_and_superlative_of_adjectives_gc24022em

https://es.liveworksheets.com/worksheets/en/English_as_a_Second_Language_(ESL)/Comparatives_and_superlatives/Comparison_of_short_adjectives_pg1720fb

https://www.englishexercises.org/makeagame/viewgame.asp?id=6009

https://www.englishexercises.org/makeagame/viewgame.asp?id=13690

https://www.significados.com/bullying/

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https://bullyingsuckstch.weebly.com/

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