1. Nguyen asked his teacher when to start the computer
2. what to say in my graduation speech
3. what to do in this situation
4. whether to tell that to her
5. who to contact
6. where to find more information about that
1 Nguyen asked his teacher when to start the computer
2 I don't really know what to say in his graduation speech
3 They can't decide what to do in that situation
4 He wondered whether to tell that to her
5 She was not sure who to contact
6 He didn't know where to find more information about that