Change these sentences into reported speech:
1. "You should learn words and do exercises in order to get good grades", my teacher said.
2. "What happened to Mr.Budd yesterday evening?", one of the boys wanted to know.
3. Betty wonders, "When did I send a letter to my parents?"
4. They said to her, "Where will your father leave here for the USA?"
5. Minh said, "Which of these pictures do you like best,Mr.Hung?"
6. Simon is saying to Susan, "Would you and Maline like to come to my party ?"