Определите функцию окончания s в следующихпредложениях:1. I think of her, but

Определите функцию окончания s в последующих
предложениях:
1. I think of her, but she thinks only of him
And though it's only a whim, she thinks of him
Oh how long will it take
Till she sees the mistake she has made?
Dear what can I do?
Baby's in black and I'm feeling blue
Tell me, oh what can I do? (The Beatles)
2. Success is not final, failure is not fatal: it is the courage to continue that
counts.
(Winston Churchill)