21.   Beads of sweat appeared on her forehead and she trembled visibly.

22.   Black spots will appear on silver if it comes into contact with dry dishwasher powder.

23.   Brown stains appeared on the lapel of his new coat.

24.   But how did primitive life-forms first appear on Earth?

25.   But how often does a homemade pie appear on your holiday table?

26.   But they also appear on a screen saver that PointCast includes with its software.

27.   During the fighting in Beirut large numbers of armed militiamen had appeared on the streets.

28.   During the Pleistocene, Stone Age man appeared on the scene in Java and spread quickly.

29.   Ellie appeared on stage to a standing ovation.