I. Перепишите следующие предложения, определите в каждом из них видовременную форму и залог глагола-сказуемого (см. образец). Переведите предложения на русский язык. 1. The radar has been used for the automatic control of ground transport. 2. Today plastics are being widely used instead of metals. 3. The construction of the dam has been completed this month. 4. The alloys were experimented upon in our lab.