Fill each of the numbered blanks in the following passage. Use only one word in each space.
The task begins with an example (0).
One pencil can write 45,000 words! More than 2 billion pencils (0)  are  used in the United States every year, and most of them have erasers!
(1) , the majority of pencils sold in Europe do not have erasers! Do Europeans (2)  more or less mistakes?
There have been many innovations in pencil design through the last several hundred years. March 30th, 2008 marked the 150th (3)  of a famous patent (4)  was the first patent to address the installation of a rubber eraser (5)  the end of a wood-cased pencil. The patent filed by Hymen Lipman was granted (6)  March 30th, 1858.
The eraser was actually installed within the wood of the pencil opposite the writing core end. In this manner, the pencil could be sharpened on (7)  ends to refresh (8)  the graphite core or eraser.

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