Thomas Edison started/was starting work on the railway when he was twelve, selling newspapers and snacks. There were long periods with nothing for him to do so he built/ was building himself a little laboratory in the luggage van where he could carry out experiments when he didn't sell/ wasn 't selling things to passengers. Another thing that he occupied/was occupying himself with was reading. Rejoined a library and read/was reading every single book in it. One day, when he waited/was waiting at a station he noticed/was noticing a small boy who played/was playing by the track, unaware that a train approached/was approaching. Edison ran/was running out and grabbed/was grabbing the child just in time. The child's father was so grateful that he offered/ was offering to teach Edison to be a telegraph operator. Edison accepted the offer and soon he had/was having regular lessons. After a year, he was good enough to get a job in the telegraph office. He continued to read and experiment, whenever he had/was having time. At twenty-one he left/ was leaving the telegraph office to devote all his time to be an inventor. He went/was going to invent the electric light bulb, the photograph and the movie camera. Прошу.. Помогите(