Передайте последующие предложения в Passive Voice. 1)They did not invite her

1. They did not invite her to the party. She was not invited to the party.
2. I did not leave the window open. The window was not left open by me.
3. They did not turn off the light. The light wasnt turned off by them.
4. I have invited some friends to tea. Some friends have been invited to tea by me.
5. She has given me an English book. I have been given an English book by her.
6. Have you written the letter yet? Has the letter been written by you yet?
7. They have told us a lot of interesting things. A lot of interesting things have been told by them.
8. The students have written the test-paper without mistakes. The test-paper has been written by the students without mistakes.
9. The children have scattered about a lot of things. A lot of things have been scattered about by the children.
10. The girl has put all the books into the bookcase. All the books have been put into the bookcase by the girl.
11. Snow will cover the fields in winter. The fields will be covered with snow in winter.