Помогите пожалуйста. Перевести в косвенную речь!!!

1. My elder sister told me to lock the door when I left the house. 2. She asked Robert if he had received a telegram from his wife. 3. Mabel said that nothing would change her decision and she would leave for Cape Town that night. 4. The old woman asked her nephew not to smoke in the room. 5. The girl said that she was shivering with cold. 6. The boy said that he wanted to sit in the armchair. 7. The secretary told me that the delegation had arrived in St Petersburg the day before.