wood and steel
steel
It was made of steel.
Telephone lines are made of iron or steel. Between the iron or steel core and the pipe is an insulating material. All Telephone lines are made and work this way.
copper
The telephone was invented by him.
Inventing the telephone.
He invented the telephone.
Alexander graham bells first telephone is in the national museum of American history in Washington D.C.
Great
invinted the telephone
He invented the telephone and when he was a kid he invented the wheat husker.
ummm the telephone...