Our friends bought a new car переделать предложение в passive voice

A new car was bought by our friends.

Новая машина была куплена нашими друзьями.

Was a new car bought by our friends?

Was a new car or a new flat bought my our friends?

What was bought by our friends?

What kind of car was bought by our friends?

Who was a new car bought by?

A new car was bought by our friends, wasn\'t it?