Определите, чем в предложениях есть слова с суффиксом – ed: 1) личная форма глагола в past simple; 2) причастие в функции: а) часть простого сказуемого в passive voice; б) определение; в) обстоятельство. переведите эти предложения на языке. 1. ferro-concrete was discovered about 200 years ago. 2. they successfully used this new method to build various attractive houses with comfortable flats. 3. the report discussed at the session was of great interest to us. 4. having improved the quality of engineering materials, our engineers have achieved a high degree of construction.