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When was it invented? Unit 9the first period京山县孙桥中学京山县孙桥中学 鄢志华鄢志华light bulbinventionEdisoninventorEdison invented the light bulb.The light bulb was invented by Edison.Karl Benz invented the car._ was invented by _.The carKarl BenzBell invented the telephone._ was invented by _.The telephoneBellListening (1b: P68)18761885192719711976A: When was the _ invented?B: I think it was invented in _.Pairwork (1c:P68)19761885197119271876A: What is the _ used for?B: I think it is used for _.talking with people