听下面一段对话，回答1 至3小题. 1. What did Mary want to give back to Fred
| 听下面一段对话，回答1 至3小题. |
| 1. What did Mary want to give back to Fred? |
| A. His keys. B. His glasses. C. His jackets. |
| 2. What did Fred do with his group? |
| A. They did experiments. B. They cleaned the street. C. They did some shopping. |
| 3. How many times has Yantai been one of the best civilized cities of China? |
| A. Once. B. Twice. C. Three times. |
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