Rewrite the following sentences using Passive Voice:13. At twelve o039;clock the

Rewrite the following sentences using Passive Voice:
13. At twelve o'clock the workers were loading the
trucks. 14. By three o'clock the workers had loaded the trucks. 15. We send our daughter to
rest in the south every year. 16. They will show this film on TV. 17. They are building a
new concert-hall in our street. 18. They have мейд a number of important experiments in
this laboratory. 19. Livingstone explored Central Africa in the 19th century. 20. By the
middle of autumn we had planted all the trees. 21. They will stage this play at the beginning
of next season. 22. They have forgotten the story. 23. Has anybody explained the rules of
the game to you? 24. They haven't brought back my skates.