21.   The police are investigating the mysterious deaths of children at the hospital.

22.   There was, in particular, deep and widespread dissatisfaction with the mathematical attainments of children at school.

23.   They had been expected to supervise school meals, to distribute milk, to be responsible for children at lunch times.

24.   They were not to be chastened by homilies like children at a Sunday school.

25.   We further found that certain physical and physiologic profiles put children at risk for specific types of learning and psychological problems.

26.   Children at school receive coloured stars for work well done.

27.   I was accustomed to being the only child at a table full of adults.

28.   Hired a zany to entertain the children at the birthday party.

29.   The treble shrieks of children at play.

30.   There are fewer children at the school this year.