C
1. did you feel
2. saw
3.didn't find
4. did Capitan Nemo travel
5. Did he explore
6. was
7. did he arrived
8. brought
9. didn't find
10. studied
D
1. until
2. as soon as
3. after
4. until
5. after
6. when
7. used to go
8. when
9. after
10. then
E
2e
3a
4b
5c
6f