Subject: grammar gen. помогите плз с правильным выбором формы - the carcinogen having been recognized/being recognized, protective measures should be undertaken. спсб!
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:(( |
а что говорит учебник? :((((( |
once the carcinogen has been recognized, ... |
да нельзя ничего менять... |
having been recognized Только кто ж так скажет-то? |
Once carcinogen has been detected... |
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