There was a fire on the mountains in September. The purpose is to personify the situation
He's a priest -- he's marrying them to other people, not to himself.
I haven't read the outsiders in like 2 years but I do remember Pony boy and his friend (I forgot sorry) were wanted for murder so they ran away and hid in an abandoned church for a while but that's only one of the major problems I remember from the book
Subordinate.
"Once you finish your work" by itself is not a sentence, therefore it depends on the remaining.