51.   The progress of each student is tracked by computer.

52.   The report provides a brief update on the progress of the project.

53.   Fallen rock is impeding the progress of rescue workers.

54.   The progress of science is unstoppable.

55.   Despite the steady progress of building work, the campaign against it is still going strong.

56.   The progress of the work was regrettably slow.

57.   The progress of the work has been unsteady.

58.   The problems have retarded the progress of the program.

59.   The honesty so important to the progress of science thus becomes a matter of self-interest to scientists.

60.   Why does the idea of progress loom so large in the modern world?