Kelly knew how to talk at a young age ___ she made friends easily. (and OR so)
Kelly knew how to talk at a young age SO she made friends easily.
Drew got on his bike ___ rode away. (and OR but)
Drew got on his bike AND rode away.
Sue can either clean her room ___ clean the bathroom as her chore for the day. (or OR and)
Sue can either clean her room OR clean the bathroom as her chore for the day.