Personal pronoums.
https://www.englisch-hilfen.de/en/exercises/pronouns/personal_pronouns.htm
Personal pronoums and possessive adjetives.
https://www.englisch-hilfen.de/en/exercises/pronouns/personal_pronouns8.htm
Verb to be.
http://www.eclecticenglish.com/grammar/PresentSimpleToBe1A.html
Verb to have.
https://www.englisch-hilfen.de/en/exercises/tenses/have_to.htm
Question words.
http://www.englishexercises.org/makeagame/viewgame.asp?id=2066
Verb to be in past.
https://www.englisch-hilfen.de/en/exercises/tenses/was_were.htm
P. Simple/P. Continuous.
https://www.englishpage.com/verbpage/verbs1.htm
Comparatives and superlatives.
http://www.myenglishpages.com/site_php_files/grammar-exercise-grammar-comparatives-superlatives.php
