COMPARATIVES AS... AS

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

www.ego4u.com/en/cram-up/grammar/adjectives-adverbs/adjectives/exercises?02

first-english.org/english_learning/english_year_2/as_as_than/64_as_as_than_test.htm

first-english.org/english_learning/english_year_2/as_as_than/47_not_as_as_exercises.htm

www.usingenglish.com/quizzes/239.html

www.grammarbank.com/too-vs-enough-exercise.html

www.usingenglish.com/quizzes/53.html

www.montsemorales.com/gramatica/Tooenough.htm

www.esl-lounge.com/student/grammar/2g38-using-enough.php