Change into Passive

1.How do Tom and Mary learn English?

2.My father will collect you at the airport

3.People call them pop singers

4.The teacher doesn't allow me to sit by the window

5.Did the tourists visit that old church last week?

6. His parents have just given him a new dictionary

7. They were playing a game of chess when we came

8.They use the combine harvester for harvesting rice crop