2 Suggested answers:
1 The glamorous new name has made clothes-swapping parties popular around the world.
2 People buy clothes for a single season because of bargain fashion stores.
3 House-swapping is a less expensive holiday, and you don't leave your own house empty, so it is less likely to be burgled.
4 Reusing things instead of throwing them away helps to reduce our carbon footprint.
1 with a clear conscience
3 landfill sites
1B 2D 3A 4C 5B 6C 7A 8D 9B 10C