1. Did Bell want to invent a modified telegraph? What did Bell want to invent? Bell wanted to invent a modified telegraph,didn't he? Did Bell want to invent a modified telegraph or TV? Who wanted to invent a modified telegraph?
2. Did Bell hear the sound of a clock through the fire?What did Bell hear through the wire? Bel heard the sound of a clock,didn'he?Did Bell hear the sound of a clock or phone through the fire? Who heard the sound of clock through the fire.