21.   The company has made heroic efforts at cost reduction.

22.   The experience has left him sceptical about efforts at conciliation.

23.   Her early efforts at writing a novel were awkward.

24.   Most of us fail in our efforts at self-improvement because our schemes are too ambitious and we never have time to carry them out.

25.   Refugees reported that Khmer Rouge guerrillas made little effort at political indoctrination after capturing a village.

26.   There will be efforts at the maintenance of the house or apartment, but not much interest in improvement of housing level.

27.   Despite efforts at early diagnosis and advances in surgery, radiation therapy, and chemotherapy, the prognosis of squamous cell carcinoma of the oesophagus remains poor.

28.   Efforts at improving oral rehydration solutions have hitherto focused on the role of various substances in improving small bowel absorption.

29.   This pronouncement, and the changed policy it conveyed, set the context for a serious effort at detente with the eastern bloc.

30.   These efforts at information-gathering by fair means or foul were merely an intensification of something visible from the very beginnings of organised diplomacy.