根据句意，用括号中所给的正确形式填空。 1. —How old is your son?   —He's _______ (nine) years old. 2. It's __________(harm) to your eyes to watch cartoons for hours. Go to have a rest. 3. Your pocket is much bigger than the _________(woman). 4. Don't worry. Peter is a good driver. He always drives_______ (careful) enough 5. We all like the wine because it is ______(make) from grapes. 6. Hard work can bring you _______(success). 7. —Who teaches ______(they) English?   —Nobody. They teach themselves. 8. He saw the doctors _______(operate) on his daughter when he came into the room.