What do we affix on letters?
Gum
Sticker
Name slip
We must have a habit of reading
Posters
Notices
Newspaper
Letters
Which was the first device to send messages by electricity?
News paper
Radio
Telegram
TV
Where does letters are sorted and stamped?
Bank
Police station
School
Post office
What is an important part of communication media?
Books
Mobile phones
Television
Which is the oldest and cheapest means of communication?
Telephone
E-mail
Sending letter
SMS
