21.   Behavior change is a personal matter.

22.   Big changes were in the offing.

23.   But by far the most significant change is the elevation of newsreader Trevor McDonald to superstar status.

24.   But design changes can be a key determinant of the experience curve for a generic group of products.

25.   But in some documents, none of those methods are efficient because more frequent paragraph format changes are required.

26.   But the great change is that nowadays there is a complete separation of children of different classes.

27.   But the other changes have been both radical and far-sighted.

28.   But the proposed changes are serious.

29.   But this revolutionary change will not be painless.