Wish + past simple; wish + past perfect - 3

1. I don't understand this point of grammar. I wish I __________ it better.
   1.   ?    understood
   2.   ?    would understand
   3.   ?    had understood
2. I should never have said that. I wish I __________ that.
   1.   ?    hadn't said
   2.   ?    wouldn't say
   3.   ?    didn't say
3. I miss my friends. I wish my friends __________ here right now.
   1.   ?    were
   2.   ?    would be
   3.   ?    had been
4. This train is very slow. The earlier train was much faster. I wish I __________ the earlier train.
   1.   ?    had caught
   2.   ?    would catch
   3.   ?    caught
5. I didn't see the TV programme but everybody said it was excellent. I wish I __________ it.
   1.   ?    had seen
   2.   ?    would see
   3.   ?    saw
6. I cannot sleep. The dog next door is making too much noise. I wish it __________ quiet.
   1.   ?    would keep
   2.   ?    had kept
   3.   ?    kept
7. I went out in the rain and now I have a bad cold. I wish I __________ out.
   1.   ?    hadn't gone
   2.   ?    wouldn't go
   3.   ?    didn't go
8. It was a stupid thing to say. I realise that now. I wish I __________ it.
   1.   ?    hadn't said
   2.   ?    haven't said
   3.   ?    wouldn't have said
   4.   ?    didn't say
9. I went out in the rain and now I have a bad cold. I wish I __________ out.
   1.   ?    hadn't gone
   2.   ?    wouldn't go
   3.   ?    didn't go
10. I hate living in England. It's cold and it's damp. I wish I __________ in Spain.
    1.   ?    lived
    2.   ?    would live
    3.   ?    had lived
11. My car is too small. I wish I __________ a bigger one.
    1.   ?    had
    2.   ?    would have
    3.   ?    had had
12. You're always moaning about something or other. I wish you __________.
    1.   ?    would shut up
    2.   ?    shut up
    3.   ?    had shut up
13. I feel sick. I wish I __________ so much chocolate.
    1.   ?    hadn't eaten
    2.   ?    didn't eat
    3.   ?    haven't eaten
    4.   ?    wasn't eating
14. I wish my grandmother __________ so far away.
    1.   ?    didn't live
    2.   ?    hadn't lived
    3.   ?    wouldn't live
    4.   ?    isn't living
15. Sometimes I wish I __________ science at university instead of literature and philosophy.
    1.   ?    had studied
    2.   ?    was studying
    3.   ?    would have studied
    4.   ?    studied
16. This exercise is very boring. I wish the teacher __________ us some more interesting things to do.
    1.   ?    would give
    2.   ?    had given
    3.   ?    gave
17. I did terrible on the history test yesterday. I wish I __________ harder.
    1.   ?    had studied
    2.   ?    were studying
    3.   ?    studied