Change these sentences into reported speech

Câu gián tiếp ở dạng trần thuật: S + said to/told + sb + that + S + V(lùi thì)

1. The principle said that all the students were told this story. (are (hiện tại) -> were (quá khứ))

2. Mai said that her parents were very proud of her goog marks. (are (hiện tại) -> were (quá khứ); my ->her)

3. The teacher said that all the homework had to be done carefully. (must = have to -> had to)

4. Her father said to her that she could go to the movie with her friend. (you -> she, your -> her; can -> could)

5. Linh said that she bought clothes for the poor students. (I-> she; buy (hiện tại đơn) -> bought (quá khứ đơn))