Was it necessary for her to spend so much money on it?
HAVE
Did .................... spend so much money on it?
She's driving too fast for me to keep up with her.
ENOUGH
She .................... for me to keep up with her.
Susan and Frank don't like each other.
WELL
Susan and Frank don't .................... with each other.
It's possible that he hasn't been informed about his uncle's death.
MIGHT
He .................... informed about his uncle's death.
Mark is very patient, he'll never give up.
TOO
Mark is .................... give up.
I'm sorry I didn't go to college.
REGRET
I .................... to college.