21.   Stifle your yawns.

22.   What stifles yawns are the best action sequences Lucas has ever directed.

23.   While Ms. Lependorf was talking, Timmendequas stifled a yawn at the defense table.

24.   You could imagine him stifling a yawn as he said it.

25.   Readers may be forgiven for stifling a yawn here, for passions about international lending are hard to arouse.

26.   But fans of both teams could be forgiven for stifling a yawn if they stayed up to watch the games.

27.   Stifling yawns and perusing newspapers, the opposition legislators have been camped out day and night on the steps leading to the budget committee room in Parliament.