Question

Перевод из активного залога в пассивный(16-25).Спасибо!​

Answer 1

16. This book was written in the 19th century [by him].

17. Tennis was being played from four till five [by them].

18. A number of important experiments have been made in this laboratory [by them].

19. Central Africa was explored in the 19th century [by Livingstone].

20. All the trees had been planted by the middle of autumn [by us].

21. This play will be staged at the beginning of next season [by them].

22. The story has been forgotten [by them].

23. Have the rules of the game been explained to you [by anybody]?

24. My skates haven't been brought back [by them].

25. Corrections are usually made in red ink [by teachers].

То,что в скобках,в принципе можно не писать.