【正文】
—________ A. It’s a box. B. Look! C. Yes, it is. ( ) 2. —Is this a dog? —Yes, ________. A. it isn’t B. it is C. there is ( ) 3. —________ —It’s a rabbit. A. How are you? B. What’s that? C. Is it a rabbit? ( ) 4. —________ —No, it isn’t. A. Is that a cat? B. How are you? C. What’s this? ( ) 5. It’s ________ apple. A. an B. a