The key answer of exercise 4

a)

1. To make the world a better place by giving people ideas for small actions they can do as individuals.
2. E → 1, 4, 6, 7; PS → 2, 3, 5, 8

b)

1. idea 5
2. idea 7
3. idea 2
4. ideas 3 and 8

c)

Speaker 1

1. hates it when people forget her name; particularly at school - teachers don’t give you as much attention if they don’t know your name
2. makes people uncomfortable because they can’t remember her name

Speaker 2

1. pollution. - it takes 1,000 years for a plastic bag to decay; animals and fish get caught in them
2. people keep trying to give her one; forgets to bring one with her

Speaker 3

1. people look bored or miserable, especially on public transport
2. a colleague thought he was flirting

Speaker 4

1. has always been bad at it and wants to use jokes to build relationships
2. has problem with timing in jokes; embarrassing moment when he told boss a joke - he didn’t think it was funny