4. Must have to /mustn't/ don't have to / doesn't have to? 1. We are going to drive for six hours. We get something to eat! 2. I watch television all the time. I. stop. 3. You get up early on holidays. 4. This window is broken. You . open it. 5. Mr Brown is a very rich man. He . work. 6. It's his sister's birthday tomorrow. He buy her a birthday present!