Complete the sentences. 1. A postman is a person who brings letters, postcards and newspaper to the people's houses. 2. Nowadays there are many people who work with computers. But some of them create their own programs. They are ....... . 3. When you have problems with your teeth you must see a ...... . 4. In any office you see a lot of ..... . They are usually dressed in dark suits and white shirts. 5. My mum takes care of sick people in hospital. She is a ...... . 6. Would you like to be a .... ? If so, you have to learn many songs by heart.