1.The means of communication: mobile phones, the Internet, newspapers, TV, radio.2. 1,879 - one thousand eight hundred and seventy-nine; 345 - three hundred and forty-five; 1983г - nineteen eighty-three; 2003г - two thousand and three; 7,251 - seven thousand two hundred and fifty-one.3. Adjectives: Russian, friendly, talkative, helpful, musical.4. They didn\'t understand each other. Did you enjoy travelling? Would you mind closing the window? Can I speak to Paul? Classmates helped each other in that difficult situation. (each other - про 2х, one another - если предметов или лиц больше 2х).5. I like to get along with your friends (get along — быть в хороших отношениях). What are you responsible for? Where does he usually jog in the morning (jog — совершать пробежку, бегать трусцой)? A. Sakharov became the youngest academician in Russia in 1953. The first telephone exchange opened in Moscow in 1882.