About an hour had passed when he heard the key softly turned, and the door opened.
The door opened softly after an hour had passed.
The man heard voices in the hall before the key turned and the door swung open.
People wait in lines on the stairs.
Mr. Greuze retrieved a piece of paper from his pocket and began to inspect it.
All planets fall into the same class.
A city has an architecture element that is in the shape of a circle.
There is a demand for catalyst due to the Clear Skies Act.
A woman sells products to customers