Articles rules - http://www.stgeorges.co.uk/blog/english-grammar-test-a-an-the-indefinitedefinite-article-quiz

Articles  test -   https://english.lingolia.com/en/grammar/nouns-and-articles/definite-indefinite-articles/exercises

https://www.learnenglishfeelgood.com/articles-a-the1.html

http://www.myenglishpages.com/site_php_files/grammar-exercise-articles.php

https://www.englishgrammar.org/exercises/

Nouns Testing - http://www.softschools.com/quizzes/grammar/identifying_nouns/quiz3148.html

https://www.proprofs.com/quiz-school/story.php?title=plural-noun-test

http://englishgrammarpass.com/exercises/test/100/1.html

https://www.englisch-hilfen.de/en/exercises/nouns_articles/countables.htm

http://englishgrammarpass.com/exercises/test/100/9.html

Pronouns testing - https://www.ecenglish.com/learnenglish/lessons/test-your-pronoun-knowledge

https://www.usingenglish.com/quizzes/67.html