they" in the passage refers to ____.,,,,classes|instructors|students|==courses">
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educational technology" refers to ____.,,,,==electronic devices used in education|the rewritable wax tablets used in STEM|sophisticated calculators|course management software">
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instances" mostly means ____.,,,,special types|==typical cases|excellent chances|right occasions">
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extensive" in the passage is closest in meaning to ____.,,,,==great|maximum|full|poor">
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Capybara

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