Cover Letter B, on the other hand, shows personality and style, and showcases that the author has done her homework on Starbucks.

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"She had done her homework, " says a person who was in attendance.

WSJ: Laurene Powell Jobs, Widow of Steve Jobs, Goes Public to Promote Dream Act

Mary has done her homework and run the numbers and found that the trends project sweeping change and we are at the tipping point.

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Often, UK ministers of all parties when interviewed by Welsh media, are not across the detail of events in Wales but she had clearly done her homework.

BBC: An hour with Maggie; Thatcher and Wales