As or like?

https://dictionary.cambridge.org/es/gramatica/gramatica-britanica/as-or-like

Exercises

https://www.perfect-english-grammar.com/as-and-like-exercise-1.html

http://www.bristol.ac.uk/arts/exercises/grammar/grammar_tutorial/page_64.htm

Adjective or Adverb

https://www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/three-pigs