Sure, here are the sentences changed into reported speech:

1. Mai said that she was going to school then.
2. Tom said that he had met him the previous week.
3. Mary told Billy that she would never forget him.
4. Linda said that she had had dinner before Tom came.
5. Mark said that while he was waiting for the bus, he had seen Tom.
6. My dad said that my mom had been his first love.
7. Tom said that it was the first time he had tried Italian food.
8. Mary said that my mom had gone shopping with her mom the previous day.
9. Anna said that coffee was really fantastic and she loved it.
10. Hector said that he wanted to get a job for money then and he would buy me a pretty dress.