NO SOONER/ CLOSED/ DOOR/ SOMEBODY START/ KNOCK/ IT//A. NO SOONER D...

19. No sooner/ closed/ door/ somebody start/ knock/ it//A. No sooner did I close the door when someone started knocking on it.B. No sooner had I closed the door than someone started knocking on it.C. I had no sooner closed the door before someone started to knock on it.D. I no sooner closed the door than someone started knocking on it.