The abacus is the counting frame that was the most widely used device for doing arithmetic in ancient times and whose use （ ）into modern times in the Orient.
The attack at Pearl Harbor（ ）a sharp response from American citizens, which pushed Americans to the world war.
Based on the（ ）that every business is now free to formulate its own strategy in light of the changing market, I would predict a marked improvement in the efficiency of China's economy.
By the end of the nineteenth century, cities were reimbursing private hospitals for their care of（ ）patients and the public hospitals remained dependent on the tax dollars.
（ ）a matter of disagreeing with the theory of independence（ ）rejecting its implications： that the romances may be taken in any or no particular order that they have no cumulative effect, and that they are as separate as the works of a modern novelist.
Babbage was a prolific inventor, whose inventions include the ophthalmoscope for examining the retina of the eye, the skeleton key, the locomotive "cow catcher", and the speedometer.
