41.   There has been a corresponding shift in studies of youth and in the kind of questions asked by sociologists.

42.   There has been a fundamental shift in the relationship between the U.S. and Russia.

43.   There has been a noticeable shift in government policy on education.

44.   There has been a shift in the balance of power between the two countries.

45.   There has been a significant shift in government policy on education.

46.   There has been an abrupt shift in the government thinking regarding these issues.

47.   There has been only a slight shift in income distribution.

48.   There has recently been a big shift in the way people are accessing information.

49.   They represent a shift in the social division of labour related to changes in the organization of manufacturing production.