Transform the following sentences into Passive.
1.People learn foreign languages.
2.They are airing the classroom.
3.He has bought a car.
4.Somebody cleans the room every day.
5.She has lost the keys.
6.They were looking for the key everywhere.
7.They will change the date of the meeting.
8.Nobody asked me to come back.
9.When I came in they had already examined my friend.

Foreign languages are learned by peoplethe classroom is aired(?) by themthe car has been bought by himthe room is cleaned every day by smbodythe keys has been lost by herthe key was looked everywhere for by themthe date of the meeting will be changed by themi wasn't asked to come back by anybodyMy friend had been already examined when i came in by them