Поправить предложения.Tiny wrot songs for pop-singers last year.Billy in Antarctica three

Tiny wrote songs for pop-singers last year.
Did Tiny write songs for pop-singers last year?
When did Tiny write songs for pop-singers?
What did Tiny write for pop-singers last year?
Who wrote songs for pop-singers last year?
Did Tiny write songs or poems for pop-singers last year?
Tiny wrote songs for pop-singers last year, didnt she?

Billy was in Antarctica three days ago.
Was Billy in Antarctica three days ago?
When was Billy in Antarctica?
Where was Billy three days ago?
Who was in Antarctica three days ago?
Was Billy in Antarctica or in the USA three days ago?
Billy was in Antarctica three days ago, wasnt he?