a)
- Price - Everyone said festivals are more expensive than before. ✓
- Security - Some people said there's no change. ✗ The rest of the group said there's much more security now than five years ago. ✓
- Fashion - Some people didn't have an opinion about fashion at festivals. ✓ A few people said people wore more interesting and colourful clothes in the past. ✗
- Technology - Two students said the biggest changes were in technology, ✓ but most of the group said there's no change. x People found information and bought tickets on the internet five years ago, the same as now. ✗
b)
Talking about the whole group
- Everybody said ...
- Everyone said ...
- People found ...
Talking about part of the group
- Most people go ...
- some go ...
- only one of us goes ...
- Some people said ...
- The rest of the group said ...
- Some people didn't have ...
- A few people said ...
- Two students said ...
- most of the group said ...