1. I say that he's on his way.
2. I said that he was on his way.
3. I said that he came.
4. I know that he came.
5. We know that they will come.
6. We know that they will talk to us.
7. I heard that they would talk to us.
8. Who did this?
9. Ask him who did this.
10. I asked him who did this.
11. Who will do this?
12. I asked him who would do this.
13. Who died?
14. Ask her who died.
15. I asked her who died.
16. Who will die?
17. Ask her who will die.
18. Socrates asked her who would die.
19. They asked her where she was going then left.
20. They asked them where they were going then arrested them.
21. Which way should we go?
22. Who knows which way to go?
23. Ask him whether he's going to Athens or not.
24. Ask him whether he went to Athens or not.
25. Socrates asked him if he was going to Athens.