The letter was______as it was the only one ever signed by the the Queen.

This is the _____ piano on which the composer created some of his greatest works.

—Our motherland needs      development all the way to the future.—That’s really what we need.

I think you should go back to your ______ plan, which is much more practical than the present one.

I make a promise that I won’t waste any more of your ______ time.