Read the rule. Find examples of the Present Perfect Continuous in the text. We use the Present Perfect Continuous to talk about actions that began in the past and are still taking place with emphasis on duration. I've been watching TV since 6 pm/for two hours. (I'm still watching TV now.) How long have you been studying? Since the morning/For five hours.
Ищем форму have/has + been + глагол с окончанием -ing. В разделе Good news сказано, что правительства начали работу раньше и продолжают её: have been trying. Там же предприятия уже некоторое время применяют технологии: have been using. Since указывает начальный момент, for — длительность.
Governments have been trying to reduce the air pollution that causes acid rain. Some industries have been using new technologies for some time.
