Find 3 examples of passive for in the following paragraph. The next day, Bell used the same instrument to transmit the sound of his voice along the wire to Watson. Recognisable voice sounds could be heard but not actual words. Bell and Watson experimented all summer, and in September 1875, Bell completed the documents asking for his first telephone patent*. The patent was granted to Bell on 7 March, 1876. It wasn’t until three days later that Bell managed to transmit the first understandable words. The telephone was born!
