His latest book isn't as good as his first one.
His first book ........................................ his latest one.

Her old school was closer than the new one.
Her new school ......................................... the old one.

I've never played better than I did yesterday.
Yesterday ........................................ I have ever played.

He has never made such a bad decision.
It ........................................ decision he has ever made.

I didn't think my results would be this bad.
My results ........................................ I had thought.