21.   At a critical moment during the Civil War, President Abraham Lincoln declared the last Thursday of November as a day of thanksgiving.

22.   At critical moments he is usually within shouting range of Beimford and other traders.

23.   At this critical moment, a Soviet spy ring in Tokyo headed by Richard Sorge, a German correspondent for the Frankfurter Zeitung, came to the rescue.

24.   Before that critical moment, Emerson had appeared in only two games throughout the tournament and had just five national-team appearances total.

25.   A critical moment of introspection?

26.   Advocates say the conference comes at a critical moment.

27.   Adding to the complexity, the Northern Alliance appears to be leaderless as this critical moment.

28.   But an oboe reed that fails at a critical moment is a disaster.

29.   But his sudden exit at this critical moment was a blow, since he gave the original proposal much of its credibility and bipartisan sheen.