I just wonder that makes him so excited.A. why it isB. what is itC. how it isD. what it

问题补充：

I just wonder that makes him so excited.

A. why it is

B. what is it

C. how it is

D. what it is

答案：

A. why it is

B. what is it

C. how it is

(答案→)D. what it is

解析：D句意：我只是在想是什么让他那么兴奋。wonder后的宾语从句含it is...that...强调句，且强调主语，应该用陈述语序，故选择what it is.