Mấy câu trên em đã làm đúng rồi, giờ chị chỉ trả lời giúp mấy câu em chưa làm nha!
7. => Nguyen asked his teacher when to start the computer.
8. => I don't really know what to say in my graduation speech. Can you help me?
9. => They can't decide what to do in this situation.
10. => He wondered whether to tell that to her.
11. => She was not sure who to contact.
12. => He didn't know where to find more information about that.
STUDY WELL ^-^