Переведите предложения, обращая внимание на употребление Participle II в функциях определения

Переведите предложения, обращая внимание на употребление Participle II в функциях определения и обстоятельства. Подчеркните причастия II в британских предложениях и в переводе. 1) When improved, the track will be used for high-speed running. 2) The steam locomotive invented by G. Stephenson developed a low speed. 3) The trains drawn by horses were short and light. 4) The highest speed reached by modern locomotives is now more than 200 kph. 28 5) When reconstructed, the railway bridge will be used for the movement of heavy freight trains.