1 ) The old man fished/was fishing as usual when he saw/was seeing something strange. 2) In 2005, Jack was teaching/taught in Canada and became/had become well-known. 3) I ‘d known/’d been knowing Paul for many years and when I read/was reading he was/had been in prison, I knew/was knowing there was a mistake. 4) The prince had been searching/was searching in the forest for ten hours and was beginning/ had begun to lose hope. 5) He noticed/was noticing that somebody had left/had been living a briefcase. 6) Ella had been looking/had looked through old photos when she heard/was hearing a knock on the door.