Question

change into passive - he said to me "What are you reading ? "​

Answer 1

He asked me that what am I reading?

Answer 2

ANSWER:

       'He asked me what was being read by me.' is in passive voice.

EXPLANATION:

    "Passive voice" is a "grammatical voice" which makes the subject less important than the action. The object is made into the subject when it is changed into passive voice. The sentence - He said to me, "What are you reading?”; is an interrogative sentence and hence the question words do not change their place.

   Here the emphasis shifts to the thing read by the person and 'said to me' changes to 'asked'.