In "The Way You Do the Things You Do," "bright" in the line "You got a smile so bright" and "rich" in the line "You made my life so rich" are both sung with a melisma (B B), musically giving a sense of degree (for "so").
"Tight" in the line "I'm holding you so tight" is sung with a melisma (B A B D E, I think), also giving a sense of degree.