21.   Rosen gives the readers a leg up in putting his theory to work.

22.   Such theories have been put to the test in a recent paper by Samuel Kortum and Joshua Lerner at the Harvard Business School.

23.   The group had to put the theory of teamwork into action when they were outside Cleveland for a Memorial Day weekend tournament.

24.   Then he made an absolute mess of his own kitchen as he set out to determine how best to put those theories into practice.

25.   Today, Rubbani put that theory into practice when he met with Citicorp bankers based in Japan to discuss how to sell more derivatives to customers in that nation.

26.   Today, that theory is being put to the test most notably in South Africa.

27.   Tonight will put that theory to the test.

28.   Finally, two large federally financed studies put the theory to the test by putting people on low-fat, high-fiber diets.

29.   The second stage required the students to put theory into practice via a gotong-royong exercise.