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.