– My hat is out of style. ?– Maybe you should buy a new one. A. What’s wrongB. Can I help

问题补充：

– My hat is out of style. ?

– Maybe you should buy a new one.

A. What’s wrong

B. Can I help you

C. Do you know

D. What should I do?

答案：

A. What’s wrong

B. Can I help you

C. Do you know

(答案→)D. What should I do?

解析：由答语可知，问句是征询意见。