1. the teacher asked the boy if he was sure about this answer.
2. the girl asked the boy why he was crying.
3. beth asked Nathan if it was her birthday.
4. adam asked mia if he known the time.
5. eric asked his granddaughter where she had put his glasses.
6. william asked the girl how she had known his name.
7. sophie asked Tom whether he had read this book.
8. mark asked sally if she liked crime novels.