Answers to Exercise 1:
1. You are careful. 2. It is warm. 3. He is here. 4. We are bold. 5. They are careless. 6. She is clever. 7. We are ready. 8. You are reckless. 9. I am shy. 10. They are polite.

Answers to Exercise 2:
1. Are you careful? 2. Is it warm? 3. Is he here? 4. Are we bold? 5. Are they careless? 6. Is she clever? 7. Are we ready? 8. Are you reckless? 9. Am I shy? 10. Are they polite?

Answers to Exercise 3:
1. You are not careful. 2. It is not warm. 3. He is not here. 4. We are not bold. 5. They are not careless. 6. She is not clever. 7. We are not ready. 8. You are not reckless. 9. I am not shy. 10. They are not polite.

Answers to Exercise 4:
1. Are you not careful? Aren't you careful? 2. Is it not warm? Isn't it warm? 3. Is he not here? Isn't he here? 4. Are we not bold? Aren't we bold? 5. Are they not careless? Aren't they careless? 6. Is she not clever? Isn't she clever? 7. Are we not ready? Aren't we ready? 8. Are you not reckless? Aren't you reckless? 9. Am I not shy? 10. Are they not polite? Aren't they polite?

Answers to Exercise 5:
1. You are careful, aren't you? 2. It is warm, isn't it? 3. He is here, isn't he? 4. We are bold, aren't we? 5. They are careless, aren't they? 6. She is clever, isn't she? 7. We are ready, aren't we? 8. You are reckless, aren't you? 9. I am shy, am I not? 10. They are polite, aren't they?

Answers to Exercise 6:
1. Are you hungry? 2. Are we not correct? 3. Is he happy? 4. Is it not cold? 5. She is here. 6. Am I early? 7. They are not wrong. 8. Are you comfortable? 9. Are they not strong? 10. Am I not fortunate? ii. Is it slippery? 12. You are not late. 13. Is it not important? 14. We are famous. 15. Are they present?