Sew or So ?
Your choice!
Sew
Exemple : ‘’I need to sew the hole in my top.’’
"Sew" and "so" are homonyms which means they are often mixed up with each other. "Sew" is a verb denoting the act of using a needle and thread in order to make something.
So
Exemple : ‘’He arrived late so he missed the starter.’’
"So" is an adverb which has a number of different meanings depending upon the context. In this example it is used to denote consequence or the result of an action.