10. She doesn't grow trees in her garden.
=> 10. Trees are not grown in her garden.
11. Nobody told me the story.
=> 11. The story was not told to me by anyone.
12. Someone picks the fruits every day.
=> 12. Fruits are picked every day by someone.
13. Will the mechanic repair the A.C?
=> 13. Will the A.C be repaired by the mechanic?
14. She has solved the problem.
=> 14. The problem has been solved by her.
15. Is she drawing a picture now?
=> 15. Is a picture being drawn by her now?