用am, is, are填空。 1. Excuse me! ______ this your eraser? 2. What ______ those? ______ they birds? 3. This ______ his ruler. Where ______ my ruler? 4. I ______ in Class Three. ______ you in Class Three,too? 5. ______ these her English books? 6. Those ______ their apples. Where ______ his apples? 7. She ______ eleven. How old ______ that boy? 8. He ______ my friend. ______ your friend a boy or a girl? 9. ______ those maps? No,they ______ not. They ______ pictures. 10. These ______ your bananas. Here you ______. |