An adverb is a word that modifies a verb, as well as every other part of speech except a noun. (Modifying nouns is the adjective's job). Many adverbs end in -ly, like happily, quickly or hungrily. But if an adjective ends in y, drop the y and add -ily to make an adverb. So, "happy" becomes "happily," and "hasty" becomes "hastily." Identify the adverb in the following sentence.

The puppy trotted sadly .