Question

Change the voice for by whom has this job been done

Answer 1

Answer:

Who has done this job ?

Explanation:

This will be the answer.

Thanks

Answer 2

Your Required Question;

$\small \text \red{By whom has this job been done?} \\ \small \text \red{(Change the voice)}$

$\Large\mathbb{\color{blue}{A\text{nswer;}}}$

$\small\text{\color{blue}{Who has done this job?}}$