Réponse :
1. Sally is smaller than Peter. Peter is bigger than Sally.
2. Penelope's hairstyle is ugliest than Sally's hairstyle.
Penelope has an ugliest hairstyle than Sally. Sally has a beautiest hairstyle than Penelope.
3. Flowers are expensive as sweets.
4. For me, fruit are better than cakes.
Cakes are sweeter than fruit.
Yoghurt's taste is better than cakes and fruit.