Change the following sentences from direct speech into indirect speech.
5. She said to me, “Why have you not come?”
6. The teacher said to the students, “Do not make noise.”
7. He said to his friend, “Let us work hard.”
8. Roni said, “Hurrah! We have won the trophy.”
5. She asked me why I had not come.
6.The teacher warned the students not to make noise.
7. He said to his friends that they should work hard.
8. Roni exclaimed that they had won the trophy.