8th graders A B

http://www.englisch-hilfen.de/en/exercises/adjectives_adverbs/adverbs_of_frequency.htm

http://www.myenglishpages.com/site_php_files/grammar-exercise-adverbs-frequency.php

http://www.agendaweb.org/exercises/grammar/adverbs/frequency-1

http://www.agendaweb.org/exercises/grammar/adverbs/frequency-2

http://www.agendaweb.org/exercises/grammar/adverbs/frequency-3

http://jerome.boulinguez.free.fr/english/file/hotpotatoes/adverbesfrequence.htm

https://learningapps.org/198436

http://mrsc.free.fr/5-5-advrecogn.htm

http://eolf.univ-fcomte.fr/wp-content/uploads/grammar/frequency_adverbs/01.htm

http://www.eslgamesplus.com/adjectives-prefixes-suffixes-extreme-adjectives-opposites-jeopardy-game/