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Daphne Mackey is a veteran ESL professional, who has been in the field for over 35 years. She is the author of level 1 of National Geographic Learning’s new exciting grammar series Grammar Explorer. She has written and co-written several ESL textbooks, including Contact USA, Grammar Plus, and Read This. For the past twenty-five years, Daphne has been working in the English Language Programs at the University of Washington as a program administrator and lecturer. She has also taught in the MBA program at Pacific Lutheran University and done training in business communication.

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