Letters that are urgent can be sent through

We can watch a cricket match live with the help of

Who collects and sort out the letters from the letter box?

In ancient times, ________ carried messages for people.

In ancient times, the most common way of communication is through

Information given to a large number of people is called

We should sent  only a brief message  through a

Our teachers prepare us to learn,read and write new things to become a good

Which are instrument that can be  carried any where by the subscriber.

A man - made object sent into space to collect information is called a