95 ! 5 типов вопросов к предложению: northern ireland became a part of the united kingdom in 1920.

1) When did Northern Ireland become a part of the United Kingdom?
2) Did Northern Ireland become a part of the United Kingdom in 1920?
3) Did Northern Ireland became a part of the United Kingdom in 1920 or 1930?
4) Northern Ireland became a part of the United Kingdom in 1920, did not it?
5) What became a part of the United Kingdom in 1920?