11.   The big boom here began at the end of World War II, with the dawn of the Age of Air-Conditioning.

12.   The boom has already begun.

13.   The theater-building boom began during flush times for the movie business.

14.   Thirty years ago, as the wine boom began to unfold, wine grapes were planted willy-nilly, often with unfortunate results.

15.   Thus, the building boom began.

16.   We might find ourselves tied to a standard that holds us back, just as France was tied to its archaic Minitel system when the Internet boom began.

17.   When the Linux boom began in earnest last year, Microsoft was sweltering under the spotlight.

18.   Boats with skimmer booms began sucking up the oil.

19.   Delegates chosen by insiders were subject to challenge at the national convention, and the primary boom had begun.

20.   Until the oil boom began, the inhabitants lived mostly by fishing and pearling.