Задайте вопросы к предложению аustralia officially adopted green and gold as its national colours in 1984.

Did Аustralia officially adopt green and gold as its national colours in 1984?
When did Аustralia officially adopt green and gold as its national colours?
Аustralia officially adopted green and gold as its national colours in 1984, didn't it?
What country did officially adopt green and gold as its national colours in 1984?
Did Аustralia officially adopt green and gold as its national colours in 1984 or in 2008?