1
Gerunds 1 - 20
2
Infinitives 1 - 20
3
Gerunds 21 - 40
4
Infinitives 21 - 32
5
Unit 1 - Friendship
6
Unit 2 - Personal Experience
7
Unit 3 - A party
8
Unit 4 - Volunteer work
9
Unit 5 - ILLITERACY
10
Unit 6 - Competitions
11
Unit 7 - World Population
12
Unit 8 - Celebrations
13
Unit 9 - The post office
14
Unit 10 - Nature in danger
15
Unit 11 - Sources of Energy
16
Unit 12 - The Asian Games
17
Unit 13 - Hobbies
18
Unit 14 - Recreation
19
Unit 15 - Space conquest
20
Unit 16 - The wonders of the world