Дайте відповідь на запитання Англ. мовою What is the underground? What do you know about travelling about travelling by this means of transport?

The underground, or subway, is a train which carries you under the ground. It's fast and very comfortable because you don't have to waste your time in a traffic jam. The Londoners call the underground Tube. And the very first inderground was built in London more than a century ago.