At any rate, his mind was racing ahead to what would be the next likely move.

My mind was racing now, trying to think of the best way to say what I wanted.

Her mind was racing, trying to think of all the things she wanted to ask.

And his mind was racing on what he had to do.

My mind was racing through other cases, looking for something similar.

Her mind was racing to keep up with this new development.

His mind raced, going over what had just happened and where he'd go now.

His mind raced but kept coming back to the same point.

My mind is racing and I can't seem to sit still!

Her mind raced, as she tried to figure out what was going on.