1. Betty is (funny) girl in our summer camp! 2. Mike`s sister is (successful) than Jack`s cousin. 3. Our pets are (nice) at this competition! 4. Grandfather`s (old) in our family. 5. My (old) brother is a real professional. 6. (Interesting) thing about travels is meeting new friends.

1. Betty is the funniest  girl in our summer camp! 2. Mike`s sister is more successful than Jack`s cousin. 3. Our pets are the  nicest  at this competition! 4. Grandfather`s the oldest  in our family. 5. My older brother is a real professional. 6. The most  Interesting thing about travels is meeting new friends.