You add a comma to prepositional phrase when you want to tell more about the adjectives and adverbs.
What are you asking us to do. What question do you need to be answered.
Answer:
to avoid fire outbreak and it is flammanle
Answer:
Ponyboy starts to realize that the fighting is pointless, and that they are just people that are more fortunate. When Randy tells him that he doesn't like the pointless violence and that he would prefer that they would put their differences aside; to let it be.
Explanation:
I read the book and watched the movie.