эти активные предложении сделать пассивными ​

1. My brother is at school. He's a student.
2. My mother is at work. She's a doctor.
3. Kate is a schoolgirl. She's 7. Now she's not at home, she's at school. She has got a lot of toys.
4. My aunt is at work. She's got a lot of work.
5. Is mother at home? Yes, she's in the kitchen.
6. They are workers. They are very busy.
7. Who are they? They are scientists
8. Helen is a painter. She's got a lot of paintings.
9. Are you an engineer? No, I'm  a doctor. My brother is an engineer.
10. My brother's name is Nick.
11. My sister's name is Mary.
12. Her cat's name is Tom. 

1. The Browns' children are taken to school in a car. 2. Bread is bought by us in the nearest shop. 3. All meals are cooked for us by our mother. 4. She is always invited to their parties. 5. The Tower of London was formerly used as a prison. 6. The stranger was allowed by her to come in. 7. I was given two shilling change at the shop. 8. He was seen by me downstairs five minutes ago. 9. The students of group 7 will be examined first. 10. I will be allowed to have a ride on a bicycle. 11. The children will be allowed to watch the TV. 12. She will be told to come at five.