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МатематикаВопрос:
10. They are so tired. They ______ for an hour. a) run b) are running c) have run d) have been running
Ответ:
Правильный ответ: d) have been running.
Объяснение:
Используется Present Perfect Continuous, чтобы показать, что действие (бег) длилось в течение определенного времени (час) и все еще влияет на настоящее (они устали).
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