Multiple choice Directions: Change the voice. I wrote a letter to my friend. A letter was written to my friend by me. A letter is written to my friend by me. A letter was wrote to my friend by me. A letter was writing to my friend by me. None of these Reveal answer Fill a bubble to check yourself A Correct answer Explanation Object changes into subject (a letter) + helping verb (was)+ 3rd form of the verb (written) + object (to my friend by me).