Question

I don't know [ voice change ]​

Answer 1

Answer:

it can't be changed into passive voice as it is an intransitive verb....it doesn't has an object

Explanation:

please mark my answer as BRAINLIEST

Answer 2

Answer:

I don't know.

The matter is not known to me.

EXPLANATION

If there is no object in active voice then we have to take a object for making the sentence passive.