Can you imagine what life would be like if there is no telephone? You could not call your friends 1 the phone and talk to them. If fire 2 in your house, you could not 3 the fire department. If somebody were 4 , you could not call a doctor. In our daily life, we need to communicate with one another. We do this 5 by speaking to other people and listening to 6 they have to say to us, and as we are close to them, we can do this very 7 . However, our voices will not travel very far even when we 8 . It is thanks to the 9 of the telephone that we are still able to communicate with each other and hold conversations when we are far away. We can hear each other clearly 10 we were in the same room.