Переделать следующие предложения в passive voice. 1. by six o'clock they had finished the work. 2. at twelve o'clock the workers were loading 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. i bought potatoes yesterday. 7. i have translated the whole text. 8. livingstone explored central africa in the 19th century.