Перепишите и переведите предложения, выбрав правильную форму сказуемого (active or passive) 1. powerful track-laying machines (have developed, have been developed) for the building of railroads. 2. the road is closed because the road works (are conducting, are being conducted.) 3. at the first railways, sleepers (laid down, were laid down) along the track; nowadays they (lay down, are laid down) transversely.

1. Powerful track-laying machines have been developed for building of railroads.
2. The road is closed because the road works are being conducted.
3. At the first railways, sleepers were laid down along the track; nowadays they are laid down transversely.
1. Для строительства железных дорог разработаны мощные гусеничных машины.
2. Дорога закрыта из-за проведения дорожных работ.
3. На первых железных дорогах шпалы укладывались вдоль трассы, а  в настоящее время они укладываются поперечно.