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Common Errors Workbook |
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Punctuation and mechanics |
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29. Do not use a comma to set off a because clause that follows a main clause |
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For each of the questions below decide whether a comma is needed or not.
Because the West Nile Virus is gradually spreading throughout the United States __1__ (comma/no comma) veterinarians are recommending that horse owners vaccinate their horses. After the initial shot, several boosters may be needed __2__ (comma/no comma) because of the long mosquito season. Sadly, some horse owners have neglected to vaccinate their horses __3__ (comma/no comma) because they want to avoid paying for a modestly priced shot.
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