https://www.inglessencillo.com/presente-continuo

https://agendaweb.org/verbs/present_progressive-exercises.html

https://www.perfect-english-grammar.com/present-continuous-exercise-1.html

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

https://www.englishclub.com/grammar/verb-tenses_present-continuous_quiz.htm

https://english.lingolia.com/es/gramatica/tiempos-comparacion/simple-present-present-progressive

https://agendaweb.org/verbs/present_progressive-exercises.html

https://www.ego4u.com/en/cram-up/grammar/simpre-prepro

https://www.englishpage.com/verbpage/verbs1.htm

https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_progressive2.htm

https://www.english-4u.de/en/tenses-exercises/present-simple-progressive.htm