Radio was invented by________________.

___________ is the quickest and most direct means of communication.

___________ has also become a strong media in the last few years.

Samuel Mores inverted the ________________ telegraph machine.

_________ is one of the most common and cheapest means of spreading information.

_____________ transmit the exact matter of a document, letter or picture from one place to another.

We should sent only a brief message through a ____________.