Прочитайте текст и заполните пропуски подходящими по смыслу словами. Metals began to be widely used ...: ответ на тест 912206 - Английский язык

Прочитайте текст и заполните пропуски подходящими по смыслу словами.
Metals began to be widely used as 1_______construction materials not so long ago. Before the 2_______ of the nineteenth century metals played little structural role in the process of building. Mostly they served for 3_______ parts of buildings. The ancient Greeks and Romans are known to use bronze for joining 4_______ of stone.