Задайте все 5 вопросов общий,альтернативный,разделительный,специальный и вопрос к подлежащему к этому предложению; this morning my parents have travelled by train to moscow

This morning my parents have travelled by train to Moscow.
общий
Have your parents travelled by train to Moscow this morning?
альтернативный
Have your parents travelled by train or by bus to Moscow this morning?
разделительный
This morning my parents have travelled by train to Moscow, haven't they?
специальный  
Why have your parents travelled by train to Moscow this morning?
вопрос к подлежащему
Who has travelled by train to Moscow this morning?

Have your parents travelled by train to Moscow this morning?
Have your parents travelled by train to Moscow or to St. Petersburg this morning?
This morning my parents have travelled by train to Moscow, haven't they?
When have your parents travelled by train to Moscow?
Who has travelled by train to Moscow this morning?