Kasulikud lingid ja kirjanduse loetelu.
http://www.really-learn-english.com/simple-present-exercises.html#01
https://www.perfect-english-grammar.com/comparative-adjectives-exercise-1.html
https://agendaweb.org/exercises/grammar/comparison/comparison-write-2
Kasulikud lingid ja kirjanduse loetelu.