Ex. 6. say the same using the passive voice. 1. russia developed the first automatic engine driver in 1960. 2. robert has booked the train tickets online. 3. the railway is installing new ticket-vending machines at the terminal. 4. by that time, we had changed our plans. 5. air-conditioning system
maintains the optimum temperature and humidity (влажность) in the coach. 6. the new railway line will connect central and eastern regions of the country. 7. they bought tickets two days before their departure. 8. the engineers are testing the new equipment now. 9. robert said that he had deposited
his case in the left-luggage office. 10. people build viaducts to cross canyons and ravines.

1. The first automatic engine driver was developed in 1960 by Russia.

2. The train tickets have been booked online by Robert.

3. New ticket-vending machines are being installed at the terminal by the railway.

4. Our plans had been changed by us by that time.

5. The optimum temperature and humidity is maintained in the coach by air-conditioning system.

6. Central and eastern regions of the country will be connected by the new railway line.

7. Tickets were bought by them two days before their departure.

8. The new equipment is tested by the engineers now.

9. Robert said that his case had been deposited in the left-luggage office.

10. Viaducts were built by people to cross canyons and ravines.