I knew him (make it a passive voice)?
A
He is known to me
B
He was known by me
C
He was known to me
D
He was known with me
Correct Answer: He was known to me
Active: I knew him Passive: He was known to me. It's a simple past indefinite sentence , hence to change it into passive voice , the rules apply are - Use was/were according to the subject made from the object of the active sentence. Use the principle verb in past participle form. Use "to" instead of "by" afterwise for grammatical purpose. Make the subject the object in the passive voice.