Sure, I can help you convert these direct speech sentences into reported speech. Here they are:

1. Her father told her that she could go to the movie with her friend.
2. Phong asked Peter if he enjoyed reading.
3. She asked Nam if his sister and brother went to the same school.
4. She asked her mom if there were any oranges in the fridge.
5. She asked Ba if he had been reading that book at 8 o'clock the previous Sunday.
6. He asked his friend if it would rain the next morning.
7. The teacher asked me where my father worked.
8. She asked Lan how many people there were in her family.
9. Tam's friend asked him how long he would stay in England.
10. The teacher asked Lien what her hobby was.
11. His friend asked him how he went to the airport.
12. She said she wished she hadn't gone to the party the previous night.
13. My teacher said that the Earth moves around the Sun.
14. Peter said that he wanted to tell me the news and that I must be surprised.
15. The woman said that when she was walking on the pavement, a strange man had stopped and asked her the way to the nearest bank.
16. He asked me how many lessons I was going to learn the following month.

I hope this helps! Let me know if you need any further assistance.