The key answer of exercise 3

a)

1. money does not contribute to happiness
2. The programme talks about two 'theories': Research shows that in the UK, when average income is over £10,000 a year, additional income doesn't make people happier. The problem of comparison: We become less happy when someone has something better than we have.
3. We should slow down and take more leisure time.

b)

1. give it up
2. tax them
3. take more

c)

1. box
2. dramatically; diminished
3. top-of-the-range; do it for you
4. commute; do exactly the opposite
5. convince