Английский, до меня не доходит... спасайте, заранее спасибо^_^

1. Who did give Mina my e-mail address? 2. When did you get back from holiday? 3. Who the book belongs to? 4. Who did invent the computer? 5. Who did invite Matthew to the party? 6. Which did they catch train? 7. Where is Marianna live? 8. What did happen at the meeting?