An adverb is a verb that describes the obejct of the sentence, just like an adjective.
Here you can pick out the word proud, convert it into an adverb (proudly) and use it in a sentence.
Using proudly in sentences:
1. Their parents very proudly smiledupon them.
2. Their parents very proudly congratulated them.
3. Their parents very proudly watched as they received their awards.