If you don't turn the knob just so, the door won't open.

I really need some sleep.

John stated he had, done his small part, with his usual self-effacingness.

In 2002 Guatemala officially declared the U.S. dollar as legal tender to circulate in parallel to the national currency, the quetzal. This is not likely to last for long as the quetzal is not widely accepted and is considered a weak store of value.