根据对话内容，从对话后的选项中选出能填入空白处的最佳选项。

A: Hey, Bill, I went to your classroom yesterday afternoon. But you were not in it. Where were you?

B:

A: At around three o'clock.

B: Oh.We didn't have any classes yesterday afternoon, so we went to the park to relax ourselves.

A:

B: Well, I played tennis with Jack.

A: What was Mary doing while you were playing tennis?

B:

A: What about Linda?

B: She was reading an interesting book. She likes reading, you know.

A: Yeah.

B: Yes, we enjoyed ourselves very much.

A. What did you do there? B. When did you come to my classroom? C. Did you have a good time there? D. We were in the park at that time. E. She was singing and dancing with some girls.