Question

voice change
1) he has painted a beautiful picture.
2) they have made a blunder.​

Answer 1

$\huge\mathfrak\red{Answer :) }$

✍✍Beautiful picture was been painted by him

✍✍Blunder was made by them

Answer 2

Answer:

1:The picture has been painted by him.

2:The blunder have been made by them.