用am, is, are填空。 1. How old ________ you? I ________ eleven. 2. What ________ your phone number? It ________ 261 9854. 3. Here ________ the dictionaries. 4. -Tom and I ________ in the same class. -That ________ right. 5. Excuse me! ________ this your eraser? 6. What ________ those? ________ they birds? 7. He ________ my friend. ________ your friend a boy or a girl?