Напишите следующие предложения в вопросительной (общий и специальный вопросы) и отрицательной форме: He is looking for the book which he lost. All the birds are flying south. The sky is getting very dark. They are laughing at what you said. They are travelling in Europe at present. Helen is taking dancing lessons at the country club. Mr.) Evans is writing a series of articles on the economic situation. Ann is doing well in her studies at present