https://learnenglish.britishcouncil.org/english-grammar-reference/present-simple
https://www.perfect-english-grammar.com/present-simple.html
https://www.grammarly.com/blog/simple-present/
https://www.ef.co.uk/english-resources/english-grammar/simple-present-tense/
https://www.eslgamesplus.com/present-simple-tense-action-verbs-interactive-monkey-game/
https://www.englishclub.com/esl-games/grammar/jumbled-tenses-present-simple-1.htm
https://learnenglishkids.britishcouncil.org/grammar-practice/present-simple-verb-be
https://www.perfect-english-grammar.com/present-simple-exercise-7.html
https://www.englisch-hilfen.de/en/exercises/tenses/simple_present_mix.htm
