№5
1. bigger (A)
2. shorter (B)
3. taller (A)
4. thinner (B)
5. cleverer (B)
6. smaller (B)
№6
2. You must walk slowly and quietly.
3. You must keep your hands away from animal's mouths.
4. You mustn't feed the animals.
5. You mustn't park your car inside the farm.