听第 8 段材料,回答第 10 至 12 题。 10 . When did the woman catch the thief? A . On Monday morning. B . On Monday afternoon. C . On Tuesday morning. 11 . What did the thief buy? A . Some small articles. B . Some of the cheapest things. C . One of the most expensive dresses. 12 . What's the real relationship between the assistant and the thief? A . Mother and daughter. B . Teacher and student. C . Shop assistant and customer.