In the following passage some words have been deleted. Fill in the blanks with the help of the alternatives given.

Two hundred years ago, the treadmill was invented in England as a prison rehabilitation device. It was meant to cause the .........(1) to suffer and learn from their sweat. It would mill a bit of corn or ............(2) some water as a bonus. William Cubitt, a civil engineer raised in a family of millwrights, created the treadmill—which was also called a treadwheel in the early days—in 1818. Cubitt's early attempts at the treadmill's ............(3) took many forms, including two wheels you walked on, whose cogs interlocked. But his most popular .............(4), which was installed at Brixton Prison in London, ...........(5) a wide wheel. Prisoners pressed down with their feet on steps ...........(6) in the wheel, which moved it, presenting them with the next step. The Brixton treadmill was hooked up to subterranean machinery that ..............(7) corn. This treadmill could keep as many as 24 prisoners .............(8), standing side-by-side along the wheel. Some devices at other prisons were smaller, and most treadmills soon ............(9) partitions, so convicts could not socialize. They ............(10) for 10 hours a day in summer, and a mere seven in winter.