1. She asked Mai if she had worked before

2. She asked him if he could work on Saturday

3. She asked Nam what he was doing

4. He asked Hoa where she lived

5. Hoa asked Hung why he hadn't come to her house the day before

6. He asked me if I had done my homework

7. She asked me whether I liked meat or fish

8. She asked me if I had seen him

9. He asked me where my school was

10. He asked Mai what she was doing then 

11. He asked his friend if he had finished the report

12. He asked Nina if she had done the homework

13. She asked me what the time was

14. She asked Tom how he knew her name

15. Nina asked me how I went to school