a)
The review likes it because it asks some interesting questions and it's light, easy on the ye and fun.
b)
- hypothetical
- past
- would
- could
c)
- If you wanted to persuade someone to dress up as a tree in public, what would you do?
- If you wanted to raise money for charity on the streets, who would you ask to help you?
- What would you do if you wanted to sell cakes and nobody was buying them?
- What would you do if you needed to think creatively but didn't have any ideas?
- If you wanted to know how to get a seat ... you could find out by watching.
- ... if you bought a cake, you would get another one free.
- People would do better if they didn't always listen to 'experts'.