Английский язык; помогите, пожалуйста, выполнить задание

1. I prepare dinner. Dinner is prepared by me. 2. Newspapers are bought by them. 3. French lessons are given by him. 4. Short stories are written by her.
I gave him a book. The book was given to him by me.
1. He was understood by us. 2. The party was organized by him. 3. Interesting stories were told to us by them. 4. These textbooks were brought to me by her.
We shall translate these articles. These articles will be translated by us.
1. The copybooks will be taken by the children. 2. This novel will be discussed by us. 3. We will be invited by Mary. 4. This event will be remembered by people.
They are looking for the criminal. The criminal is being looked for.
1. The old bridge is being destroyed by them. 2. The students are being asked by the professor. 3. The patient is being examined by the doctor. 4. His aunt is instructing him now. He is being instructed by his aunt now.
He was cleaning the room. The room was being cleaned.
1. The bridge was being built when I came up to them. 2. The student was being examined when she came in. 3. The cars were being washed by them. 4. Sharp tools were being used by them when I came in.
Somebody has cleaned the flat. The flat has been cleaned by somebody.
1. He has been expelled from the University. 2. The report has been prepared.
2. The window has been opened. 4. The story has been told to everybody.
The table looked much better. The table had been cleaned.
1.We didn't have this book anymore. It had been stolen. 2. It was cold in the room. The balcony had been opened. 3. We came home and saw a big box. It had been brought by Mary. 4. We couldn't find our clothes. They had been taken.
They will have opened this shop by June. This shop will have been opened by June.
1. The work will have been completed by the time you return. 2. The translation will have been finished by two o'clock tomorrow. 3. The composition will have been written by Sam by ten o'clock. 4. The results will have been seen by the end of the week.