I just wonder that makes him so excited.A. why it does B. what he doesC. how it isD. what

问题补充：

I just wonder that makes him so excited.

A. why it does

B. what he does

C. how it is

D. what it is

答案：

A. why it does

B. what he does

C. how it is

(答案→)D. what it is

解析：强调句型的构成是：It is (was) + 被强调部分+ that (who) + 句子的其他成分。特殊句式中的强调句型“特殊疑问词 + is / was + it + that + 该句的其余部分”。如果这种句式作宾语就用：特殊疑问词+ it+ is / was+ that + 该句的其余部分，这里就是强调句型作宾语的情况。故选D。