PET online practice

 https://www.esleschool.com/preliminary-english-test/

https://engxam.com/handbook/5-free-practice-tests-online-pdf-b1-preliminary-pet/

6º: Unit 4: As...as

 https://agendaweb.org/exercises/grammar/comparison/as-as.htm

https://www.engblocks.com/grammar/exercises/adjectives/comparison-of-adjectives-with-as-as-not-as-as/

https://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adjectives_comparison_as_as.htm

https://agendaweb.org/grammar/comparatives-exercises.html?__r=1.4393b6a822eb5ab040f0ec6567b46eb4