В пассивный залог
1)He has made a number of important experiments in this laboratory.
2)Livingstone explored Central Africa in the 19th century

kfkf94: можешь ещё с эти помочь? тоже пассивный залог 1)By the middle of autumn she had planted all the flowers. 2)They will stage this play at the beginning of next season.

wwwwwwwwwwxx: All the flowers was planted by her by the middle of autumn
2 this play will be staged by them at the beginning of next season