Переделайте следующие предложения в passive voice 1.at twelve o'clock the workers were loading the trucks.2.by three o'clockthe workers had loaded the trucks.3.we send our daughter to rest in the south every year.4.they will show this film on tv.5.they are building a new concert-hall in our street.6.they have made a number of important experimentsin this laboratory.7. livingstone explored central africa in the 19th century.8.by the middle of autumn we had planted all the thees.9.they will stage this play at the beginning of next season.10.they have forgotten the story.11.has anybody explainted the rules of the game to you? 12.they haven't brought back my skates. плз)