Упр.6 Юнит 3 Урок 34 ГДЗ Happy English Кауфман 8 класс

In groups. What did people invent in the 20th and 21st centuries? What is the fastest means of communication today?

People invented many useful things in the 20th and 21st centuries: computers, mobile phones, the Internet, airplanes, television, robots and modern medical equipment.

The fastest means of communication today is the Internet, especially instant messaging and video calls.