21.   At a time of economic recession and high interest rates this is a particular problem.

22.   At a time of large-scale privatization, one should be seeking to strengthen competition policy.

23.   At about the time of the exhibition, it emerged that the firm was infringing the Medlock patent.

24.   At certain times of the year, the Horns would also have framed the Sun in their graceful curve.

25.   At that time of night, the roads were quiet.

26.   At the time of going press, primary and middle schools are being reorganized.

27.   At the time of his death Campbell was unsuccessfully seeking backers for a jet-driven car to go through the sound barrier.

28.   At the time of his death he was a member of the review team on acute hospital services in Northern Ireland.