Cook (food) but
He must cook dinner but he's extremely busy
TAKE THE (DOG) FOR A WALK(ADVICE) because
I should take the dog for a walk because he's bored at home
WIN A TOURNAMENT (Future)...because
Example: She won't win a tournament because she hasn't practiced
FEED MY (ANIMAL)-OBLIGATION
Ex: My sister must feed my bear because he's hungry
SWEEP THE FLOOR (Future 50/50) because of
Ex: They might sweep the floor because of the guests