1) Who saw Barbara but didn't saw Jane?
Did I see Barbara and Jane?
Whom did I see?
Did I see Barbara or Jane?
I saw Barabara, didn't I? I didn't see Jane, did I? как задать разделительный вопрос одним предложением здесь я не знаю, поэтому даю два отдельных разделительных вопроса.
2) Who went to New York last month?
Did we go to New York last month?
Where did we go last month? When did we go to New York?
Did we go to New York or to London last month?
We went to New York last month, didn't we?
3) Who is tired this morning?
Are you tired this morning?
When are you tired?
Are you tired or not this morning?
I'm tired this morning, am not I?