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МатематикаВопрос:
17. He (cook) for over an hour.
Ответ:
17. He **has been cooking** for over an hour.
Объяснение: Используется Present Perfect Continuous, так как действие началось в прошлом и продолжается до настоящего момента. Структура Present Perfect Continuous: has/have been + verb-ing. 'He' требует 'has'.
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