31.   Storage of materials and the effort of mixing are eliminated by using ready-mixed concrete, which is available in two forms.

32.   That is the hit and miss effort of cost cutting.

33.   The combined efforts of four police officers and two paramedics were needed to lift the driver from the wreckage.

34.   The effort of concealing her love was almost impossible even though it was imperative.

35.   The effort of pulling back the curtain brought a renewed stab of pain.

36.   The effort of swimming against the current exhausted him.

37.   The film charts the efforts of a dodgy theatre manager trying to lure the singer back for a last encore.

38.   The horticultural efforts of individual residents are a joy to behold, and reflect great credit on those concerned.

39.   The image of the war that I sketched earlier continues to color the efforts of many honest people.