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Common Errors Workbook |
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Punctuation and mechanics |
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26. Commas with long introductory modifiers |
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In each of the following problems decide whether the comma is required or optional.
In 1803 __1__ (comma required/comma optional) Luke Howard devised a system of cloud classification. Still used today __2__ (comma required/comma optional) Howard's system describes the height and appearance of the cloud from the ground. Although English was his native language __3__ (comma required/comma optional) Howard used Latin terms to define the cloud types.
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