Exercise 1https://agendaweb.org/exercises/grammar/too-enough/exercise-1
2- https://agendaweb.org/exercises/grammar/too-enough/exercise-2
3- https://agendaweb.org/exercises/grammar/too-enough/test-1
4- https://www.usingenglish.com/quizzes/53.html
5- https://www.usingenglish.com/quizzes/127.html
6- https://www.usingenglish.com/quizzes/222.html
7- https://www.myenglishpages.com/english/grammar-exercise-too-enough.php
8-https://test-english.com/grammar-points/a2/too-too-much-too-many-enough/
9- https://www.englisch-hilfen.de/en/exercises/confusing_words/to_too_two.htm