Change into reported speech.  He said, "When he left they were still working." "She has been reading since I came home." "You speak as if you had witnessed the event." "You can have a rest if you are tired." "He may not enter t...

He said that when he had left they had been still working.     He said that she had been reading since he had come home. He said that I spoke as if I had witnessed the event. He said that I could have a rest if  I was tired. He said that he might not enter the room if I was not allowed to. He said that the sun rose in the east. He said that Great Britain was a monarchy.