Перепишите след. предложения; подчеркните в каждом из них глагол-сказуемое и определите его видо-временную форму и залог. a) 1. Today scientists are still looking for the substance as a source of energy. 2. The Mendeleyev syste...

Перепишите след. предложения; подчеркните в каждом из них глагол-сказуемое и определите его видо-временную форму и залог. a) 1. Today scientists are still looking for the substance as a source of energy. 2. The Mendeleyev system has served for almost 100 years as a key to discovering new elements. б) Synthetic rubber products were developed between 1914 and the 1930s. 2. The intensity of this process is influenced by many factors.