6a В Какой форме стоят глаголы?
1) In this country all orbital stations from Salyut 5 onwards were used for that purpose, as well as rockets.
2) Since 1976 over 600 technological experiments have been carried out on board manned and unmanned space vehicles.
3) Preparatory
work for industrial production in space at a larger scale is being
carried out in Russia, the USA, Western Europe and Japan.