问题补充：
---I have a bad cold.
---.
A. No problem.
B. Yes, you don’t look well
C. Thanks.
D. I’m sorry to hear that.
答案：
A. No problem.
B. Yes, you don’t look well
C. Thanks.
(答案→)D. I’m sorry to hear that.
解析：No problem.没问题；Yes, you don’t look well是的，你看起来不太好。Thanks.多谢了；I’m sorry to hear that.很抱歉听到这个消息。结合上文句意：我感冒了。可知选D最符合语境。
