Used to...

What did you used to do when you were seventeen years old?  What were you doing Saturday at 2:00 PM?

When I was seventeen, I used to dance ballet.  I danced about 17 hours per week.  I used to try to teach myself to play the guitar.  I used to go to high school.  I used to read novels.  I used to talk on the telephone for hours.

On Saturday at 2, I was driving to Virginia Beach to see my dad.