Adjectives describe nouns. Adverbs describe everything else (verbs, adjectives, and other adverbs) and often end in -ly. Most adjective vs. adverb questions will use an adjective where there should be an adverb. You need to spot the misused adjective and replace it with an adverb.
Adjectives focus on the what: what color? What size? What quality? etc.
Due to his growing deafness, Beethoven composed more slow than many of his contemporaries.
