The context of the following conversation is After studying for hours, Skylar finally got her history study guide down.:
Skylar says I studied for hours, but I think I finally am ready for my history test. I've got the study guide down..
The friend responds That's good. I know you've been studying really hard..
Skylar responds I just need to get a really good grade on this test..
The friend responds It sounds as though you've studied as much as you could..
Skylar responds That's true, I did. I don't think I could be any more prepared..
The friend responds Then that's really all you can do. You can't study any more than you did..