Переведите данные предложения. Поставьте их в вопроси-
тельную форму, 1-е, 4-е — в отрицательную форму.
1. The train develops a speed of 130 kilometres per hour on some
sections.
2. The designers are making different improvements in the construction
of the locomotives.
3. Electronics became very important in all branches of industry.
4.The students were testing new devices in the laboratory last evening.