Change the sentences given below as directed. Be careful not to change the meaning.
1) An engineer built a building. (Use "Passive Voice")
2) A hamburger has been eaten by me. (Use "Active Voice")
3) This book is mine. (Use "my"instead of "mine")
4) Paul said, " I go to school by bus.(Use " Reported Speech")
5) Jane asked me why i had made a cake for her the day before. (Use "Indirect Question")