Нужно Измените предложения с активного залога на пассивный 1. They (must, to return) these files in two hours.
2.The fire (to destroy) this picture gallery in 1809.
3.It’s my granny’s present.She (to give) me such a wonderful cookery book.
4. Some more articles about football can be written by my son.
5. The stadium will be opened next month.
6. Chocolate is made from cocoa.
2-This picture gallery was destroyed in 1809 by the fire
3-A wonderful cookery book was given to me
4,5,6- это и так пассивный залог