Dưới đây là các câu viết lại mà không thay đổi nghĩa so với câu gốc:

15. **They wondered how they could deal with the problem.**
*They were curious about how to deal with the problem.*

16. **Could you tell me where I should sign my name?**
*Could you inform me where to sign my name?*

17. **I have no idea when we should leave for the bus.**
*I don’t know what time we should leave for the bus.*

18. **We’re not sure where we should hang the painting.**
*We’re uncertain about the location to hang the painting.*

19. **He wondered how he could tell this news to his parents.**
*He was unsure about how to share this news with his parents.*

20. **They can’t decide who should go first.**
*They are unable to make a decision on who should go first.*

21. **‘How should we use this support service?’ they wondered.**
*They were curious about how to utilize this support service.*

22. **‘Who should I turn to for help?’ he asked.**
*He inquired about whom he should approach for help.*

23. **‘Mum, when should I turn off the oven?’ Mai asked her mother.**
*Mai asked her mother when she should switch off the oven.*

24. **‘Where should we park our bikes?’ asked Phong and Minh.**
*Phong and Minh asked where to park their bikes.*

25. **‘Should we call her now?’ he asked.**
*He wondered if they should call her now.*

26. **‘What should we do to make Linh feel happier?’ they wondered.**
*They were curious about what to do to make Linh happier.*