1.to be doing well: to be succeeding, progressing nicely, or living well
Is your brother doing well?
Our company is doing well these days.
2. college: an institution of higher learning like a university
Did you go to college?
My son will go to college next year.
3. to grow up: to get bigger and develop (only for living things); to spend one's childhood
The kids are growing up fast.
She grew up in California.