Ali! What's the matter? Can't you wake up this morning?
I was up late last night. My friend had a party. I only slept about four hours.
Why didn't you stay in bed this morning?
I have to meet my study group at the library. We have a big text next week.
A big text? Why didn't you study last night instead of going to the party?
Oh, it's OK. I studied a lot before the party.