I have just returned from Chinatown. 

1) общий- Have you just returned from Chinatown?

2) альтернативный- Have you or they  just returned from Chinatown?

3) специальный- Where have you just returned from? 

4) разделительный- I have just returned from Chinatown, haven't I?

5) вопрос к подлежащему  к предложению-Who has just returned from Chinatown?

Verified answer

1) Have I just returned from Chinatown?

2)

3)When have I returned from?

4)I have just returned from Chinatown,haven't I?

5)Who has just returned fron Chinatown?