change into passive

How may friends attended your brothers marraige?

Change into active

Has your brother been called for an interview?

A special issue of school magazene was brought out.

The pedestrians are requested to cross the road at the zebra crossing only.

By how many friends was your brother's marriage attended?

or, Your brother's marriage was attended by how many friends?

Has someone called your brother for an interview?

They brought out a special issue of school magazine.

The authorities requested the pedestrians to cross the road at the zebra crossing only.