从每组所给的句子中选择听到的句子。 ( )1. A. It's good to see you. B. I'm glad to see you. C. It's nice to see you. ( )2. A. This is Mrs. Chang. B. This is Miss Chang. C. This is Mr. Chang. ( )3. A. What are these? B. What are those? C. What is this? ( )4. A. Look out! There is a bus coming. B. Look out! There is a car coming. C. Look out! There is a taxi coming. ( )5. A. How did you spend this winter vacation? B. How did you they spend this winter vacation? C. How did you spend this summer vacation?