Измените залог в следующих предложениях и объясните. Somebody has locked the box and I cannot open it. Our friends are making special preparations. She will write a new book. We wash the dishes every day. My brother booked the tickets. They sent for Alice. и

The box has been locked and it cannot be cannot opened.
Special preparations are being made by our friends.
A new book will be written by her.
The dishes are washed by us every day.
The tickets were booked by my brother.
Alice was sent for.