Grammar
Comparision
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-110885.php
Superlatives
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-1160.php
Exercises
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-76881.php
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-44392.php
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-89843.php
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-55414.php
https://www.tolearnenglish.com/exercises/exercise-english-2/exercise-english-6578.php