I’m which two sentences do the underline words represent prepositional phrases

to gain popularity at school, fitzgerald wrote plays for the school and cast himself as the star. he also joined one of the universitys most prestigious clubs.

well basically since ima beginner people will answer any subject "right away"and if you get more points you could ask more questions or if you answer someone's question you get points

always metal! releases anger and stress! bands i suggest are trivium, lamb of god, slayer, and amon amarth