1)Did Helen visit the unigue museum of ancient paintings and folk art two years ago?

2)Did she visit the unigue museum or the national museum?

3)Who visited the unigue museum of ancient paintings and folk art two years ago?

4)Helen visited the unigue museum,didn`t she?

5)When did Helen visit the unigue museum?

Two years ago Helen visited the unique museum of ancient paintings and folk art.  

General question

-Did Helen visit the unique museum of ancient paintings and folk art two years ago?

Alternative question

-Did Helen visit the unique museum of ancient paintings and folk art two years ago or three years ago?

Special question

-When did Helen visit the unique museum of ancient  paintings and folk art?

-Who visited  unique museum of ancient  paintings and folk art two years ago?

-What did Helen do two years ago?

-What did Helen visit two years ago?

Tag-question

- Two years ago Helen visited the unique museum of ancient paintings and folk art, didn't she?

Subject question

-Who visited  unique museum of ancient  paintings and folk art two years ago?