Answer:
I was so nervous that I clumsily dropped my notes on my way to the stage.
Step-by-step explanation:
Adverbs are words we use to modify (describe) verbs, adjectives, and other adverbs.
Adverbs used in the given sentence are so and clumsily. So is an adverb of degree that modifies the adjective nervous. Clumsily is an adverb of manner derived from the adjective clumsy (clumsy + suffix -ly). It modifies the verb dropped.