Change the following sentences into questions. 1. He often listens to the radio. 2. There are six passengers in the corridor. 3. The train departs at eight o'clock. 4. Trains usually travel slowly. 5. Conductors look after the passengers. 6. He often clips our tickets at noon. 7. They have their breakfast at eight. 8. The guard waves the green flag. 9. She always sees posters at the station. 10. T always see posters at the station. ​