Перевести вопросы из активного в пассивный залог​

By whom was Australia discovered?

What language is spoken in New Zealand?

How many people were invited to the party?

Where are bananas grown?

Where were the keys lost?

Was his aunt taken to the hospital?

Are you going to be examined?

When will the tea be served?

Is the road going to be closed for 24 hours?

Has it be formed like that?