21.   The children were playing a game and their happy cries echoed through the house.

22.   The children were playing hide-and-seek.

23.   The children are playing in the sand.

24.   Where do children play?

25.   Years ago, any open field, any vacant lot, any group of trees -- these were the places where children played.

26.   Children can play on paved playgrounds.

27.   Some children were playing games on the bank and there were some people rowing on the river.

28.   They came out into a slightly wider passage where there were no stalls but children were playing and black-gowned women standing in doorways talking.

29.   Children were playing and throwing a ball for each other to catch.

30.   Children often play in role.