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МатематикаВопрос:
13 We ___ the house since morning. A have been cleaning B have been clean C has been cleaning
Ответ:
Правильный ответ: A have been cleaning
Объяснение:
Предложение указывает на действие, которое началось в прошлом (since morning) и все еще продолжается. Следовательно, необходимо использовать Present Perfect Continuous. С местоимением we используется вспомогательный глагол have.
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