听下面一材料,回答第1-3题。 1. Why was there dirt on the woman? A. She was pushed to the ground. B. She wore a dirty coat. C. She took a crowded train. 2. Where was the woman robbed? A. On the underground train. B. On the bus. C. In the street. 3. Who caught the robber? A. The police. B. The conductor. C. Two passengers.