переход от активного залога к пассивному: 1)The workes had constructed the first metro line by May 1935. 2) The first line connected two districts. 3) Moscow metro builders did the construction work in difficult geological conditions. 4) During the Great Patriotic War the metro builders continued the work. 5) The belt line links 18 districts of the capital. 6) An automatic driver conducts trains according to the schedule. 7) Before holidays Muscovites decorate the streets of the city with flags, portraits, flowers and garlands of coloured bulbs. 8)An automatic driver has undergone successful tests.