Multiple choice Directions: Choose the correct passive form of the given sentence. I know him. He is known by me. He was known to me. He has been known by me. He is known to me. Reveal answer Fill a bubble to check yourself D Correct answer Explanation Case of present indefinite. In passive voice subject of active voice becomes the object & vice-versa, and they interchange their places. Prepositional error in option 1, auxilary usage error in options 2 & 3. Thus, option 4.