Réponse:

1. He said that he might be late.

2. She said that she will never forget what he did for her.

3. Paul said to Jane that he saw his cousin yesterday.

4. Jane asked Paul if he was sure that she was not disturbing him if she called him today.

5. She told her pupils that they must do their homework for tomorrow.

Explications:

Pour le style indirect, il faut attention à supprimer les guillemets et à accordé. Il faut également ajouter un mot de liason, comme "that" par exemple.