unit 1 advertisement unit 2 aging unit 3 business unit 4 career unit 5 city and country unit 6 college life unit 7 computers and the internet unit 8 eating and drinking unit 9 entertainment unit 10 environment unit 11 family unit 12 festivals and customs unit 13 friendship unit 14 success and failure unit 15 olympics unit 16 health and fitness unit 17 hobby unit 18 interview unit 19 life-style unit 20 love unit 21 media unit 22 men and women unit 23 money unit 24 morality unit 25 science and technology unit 26 smoking unit 27 tourism unit 28 transport unit 29 war and peace unit 30 weather and climate