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Common Errors Workbook |
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Punctuation and mechanics |
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30. Do not use an apostrophe to make a noun plural |
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In each of the following questions choose the correct form on the noun to fit the spaces in the paragraph below.
Contemporary research suggests that dilated __1__ (pupil's/pupils) are seen as more attractive, a fact that advertisers are quick to use. When people fail to maintain eye contact, __2__ (members/member's) of some cultures may assume that the person is uninterested, shy, or preoccupied. Increased eye contact may be perceived as showing high interest or hostility. However, different __3__ (study's/studies) have determined different times for the average length of gaze.
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