Present Perfect Continuous: утверждения

{"questions":[{"content":"[[listen-1]]<br />[[choice-4]]","widgets":{"listen-1":{"type":"listen","text":"acid rain"},"choice-4":{"type":"choice","options":["Кислотный дождь","Оксидный дождь","Кислый дождь"],"answer":[0]}},"hints":["Произнесенная фраза: acid rain."]},{"content":"[[matcher-19]]","widgets":{"matcher-19":{"type":"matcher","labels":["Polluted clouds","Soil pollution","Factory waste","Toxic fumes"],"items":["Загрязненные облака","Загрязнение почвы","Заводские отходы","Токсичные газы"]}}}]}

{"questions":[{"content":"[[speech-1]][[sentence-6]]","widgets":{"speech-1":{"type":"speech","text":"Защитники природы беспокоятся по поводу разрушения естественной среды обитания с 1990 года."},"sentence-6":{"type":"sentence","words":["Nature","defenders","have","been","concerning","about","the","loss","of","natural","habitats","since","1990."],"extra":["has","concern","for"]}},"hints":["Defenders —  существительное множественного числа, поэтому нужно использовать have.","В Present Perfect Continuous смысловой глагол имеет окончание -ing.","С — since."]},{"instruction":"Выберите конструкцию, указывающую на длительность действия","content":"The factory [[fill_choice_big-59]] polluted clouds and everybody knows about it.","widgets":{"fill_choice_big-59":{"type":"fill_choice_big","options":["has been emitting","has emitted"],"answer":0}},"hints":["На длительность действия указывает глагол с окончанием -ing.","Emit — испускать."]}]}

{"questions":[{"content":"[[speech-1]][[sentence-4]]","widgets":{"speech-1":{"type":"speech","text":"Город борется с токсичными газами."},"sentence-4":{"type":"sentence","words":["The","city","has","been","dealing","with","toxic","fumes."],"extra":["have"]}},"hints":["City — существительное единственного числа, поэтому нужно использовать has."]},{"content":"The workers [[fill_choice_big-43]] a power factory, and they've finished it today.","widgets":{"fill_choice_big-43":{"type":"fill_choice_big","options":["have been building","has been building"],"answer":0}},"hints":["Workers — существительное множественного числа, поэтому нужно использовать have."]}]}

{"questions":[{"content":"[[matcher-1]]","widgets":{"matcher-1":{"type":"matcher","labels":["Since","For","All day","Recently","Lately"],"items":["С","В течение","Весь день","На днях","Недавно"]}}},{"content":"[[speech-19]][[sentence-25]]","widgets":{"speech-19":{"type":"speech","text":"Учёные изучают влияние кислотных дождей на окружающую среду в течение нескольких лет."},"sentence-25":{"type":"sentence","words":["Scientists","have","been","studying","the effect","of","acid","rain","on","the","environment","for","several","years."],"extra":["since","has"]}},"hints":["В течение — for.","Scientists — существительное множественного числа, поэтому нужно использовать have."]}]}