Grammar - Comparative & Superlative Adjectives - Exceptions
https://www.engvid.com/english-grammar-comparative-adjectives/
https://youtu.be/yFWVbV3fd3I
https://www.proprofs.com/quiz-school/story.php?title=comparative-superlative-quiz
https://www.theguardian.com/world/2015/aug/27/guinness-book-of-records-is-60-quiz