听下面5段对话。每段对话后有一个小题，从题中所给的A、B、C三个选项中选出最佳答案，并将其标号填入题前括号内。每段对话读两遍。 1. What are they going to do this weekend? A.Go camping. B. Go fishing. C. Go boating. 2. Who is using the eraser now? A.Lucy. B. Tom. C. Bob. 3. How did the boy come to school today? A. By bus. B. By bike. C. On foot. 4. Where are the two speakers talking? A.In a park. B. In a museum. C. In a clothing store. 5. How often will the man take the medicine? A. Once a day. B. Twice a day. C. Three times a day.