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Common Errors Workbook |
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Punctuation and mechanics |
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32. Hyphens with numbers |
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In each of the following questions determine whether a hyphen is needed.
The Great Wall of China was originally planned because the country was constantly being invaded by Mongols from the north. __1__ (Twentyfive/Twenty five) feet high in most places, the wall did protect against minor invasions. __2__ (Twenty-five/Twenty five) feet wide at the base, the wall did not prevent a major attack by Genghis Khan in the __3__ (thirteenth century/thirteenth-century)
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