Замість підрядних речень використайте різні форми дієприкметника. 1. When he arrived at the railway station, he bought a ticket, walked to the platform and boarded the train. 2. After he was shown in, he was told to take off his coat and wait for a while. 3. He looked at me and hesitated, he did not know what to say. 4. After I had written this exercise, I began to doubt whether it was correct. 5. Take care when you cross the street. 6. Students should always be attentive while they are listening to the lecturer. 7. There are many students who study music.