— Is there anything you want to know? — I just wonder that makes Jim so excited. A. what

问题补充：

— Is there anything you want to know?

— I just wonder that makes Jim so excited.

A. what it is

B. what he does

C. how it is

D. why it does

答案：

(答案→)A. what it is

B. what he does

C. how it is

D. why it does

解析：考察主语从句，that在句子中指代具体内容，根据题意，有什么你想知道的事吗？——我想知道的是是什么让他如此兴奋？选A。it指代上文anything。