Question

(2006·山东)

I just wonder ________ that makes him so excited.

[　　]

A．why it does

B．what he does

C．how it is

D．what it is

Answer 1

答案：D
解析：

本题题干相当于I just wonder what makes him so excited的意义，所以该题实际上为强调句型的特殊疑问句式，what为宾语从句的连接词且在从句中作主语。