Fill in the blanks with 'am', 'is', or 'are'.

1. She **is** seven years old. 2. They **are** brothers. 3. It **is** a kite. 4. I **am** twenty. 5. **Is** he happy? 6. We **are** not twins. 7. **Are** you in your bedroom? 8. He **is** not in his bedroom. 9. It **is** a frog. 10. They **are** friends.