---I’m taking a walk after supper.---.A. That’s all right.B. That sounds great.C. I’m sorr

问题补充：

---I’m taking a walk after supper.---.

A. That’s all right.

B. That sounds great.

C. I’m sorry to hear that.

D. Thank you.

答案：

A. That’s all right.

(答案→)B. That sounds great.

C. I’m sorry to hear that.

D. Thank you.

解析：情景交际。That’s all right.那好吧； That sounds great. 听起来不错；I’m sorry to hear that.很遗憾听到这个消息；Thank you.谢谢你。句意：我正在饭后散步。可知选B最符合语境。