Comparative and superlative adjectives

Exercises
http://www.accurist.co.uk/catalog/product/download/product/575/attachment/8/
Grammar Review

http://joanaenglishspace.blogspot.com.es/2014/01/2-eso-adjectives-comparative-and.html
http://learnenglishteens.britishcouncil.org/grammar-vocabulary/grammar-videos/comparative-and-superlative-adjectives
Compare the following pair of words or names:
Book - magazine
Beach - mountain
Boys - girls
Pop - classical music