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Вопрос:
9. For the last ten years, engineers ______ noise levels in Britain's cities. A were measuring B measured C have been measuring D have measured
Ответ:
**C have been measuring**
*Explanation:* The sentence refers to an action that started in the past and is still ongoing, using the present perfect continuous tense. The correct option is 'have been measuring'.
*Перевод: В течение последних десяти лет инженеры измеряют уровни шума в городах Британии.*
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