beautiful clean easy expensive fast ✔happy noisy old poor V short tall 1. I'm not sad. I 'm happy 2. Mr. Thomas isn't rich. Hes poor 3. My hair isn't long. It is a short 4. My clothes aren't dirty. They are clean 5. Flowers aren't ugly. They are beautiful 6. Cars aren't cheap. They are expensive 7. Airplanes aren't slow. They 8. Grammar isn't difficult. It 9. My sister isn't short. She 10. My grandparents aren't young. They 11. The classroom isn't quiet. It​