Final answer:
The sentence contains two prepositions: on and of.
Step-by-step explanation:
The sentence "Jill jumped on the top of her bed with joy!" contains two prepositions. The prepositions in this sentence are "on" and "of". Prepositions are words that show the relationship between a noun or pronoun and another word in the sentence.
Examples of other prepositions include "in", "at", "between", "over", and "under". Prepositions often indicate location, time, or direction.
Learn more about Prepositions