根据对话内容。在空白处填上适当的话语（词、短语或句子）。

A:  You look great! What do you do to keep healthy?

B:  I often eat healthy food ,  vegetables and fruit.

A: a good eating habit! Is it all?

B: No, I also exercise a lot.

A: ?

B: At least three times a week, on Tuesday, Wednesday and Thursday afternoon.

A: What  you usually do on Friday afternoon?

B: I usually play chess with my classmates.

A: I enjoy chess, too.

B: Sure. Lets go.