—do you have for dinner?—A big hamburger. A. WhoB. What C. WhereD. When

问题补充：

—do you have for dinner?

—A big hamburger.

A. Who

B. What

C. Where

D. When

答案：

A. Who

(答案→)B. What

C. Where

D. When

解析：Who谁；What什么；Where在哪儿；When什么时候。根据下文，一个大汉堡。可知上文问的是，你晚饭吃的什么？故选B。