are your grandparents?They’re very well.A. WhereB. HowC. WhatD. Who

问题补充：

--- are your grandparents?

--- They’re very well.

A. Where

B. How

C. What

D. Who

答案：

A. Where

(答案→)B. How

C. What

D. Who

解析：回答语表示是情况，对此提问用how，故选B,where对地点提问，what对事物提问，who对身份提问。