EXERCISE 28. Sentence practice. Directions: Write the form of be (am, is, or are) that is used in each sentence. Then write the grammar structure that follows be. BE 1. We're students. 2. Anna is in Rome. 3. I'm hungry. 4. Dogs are animals. 5. Jack is at home. 6. He's sick. 7. They're artists. 8. I'm in class. 9. Gina is upstairs. 10. Joe's pockets are empty.