Jim’s mother just wants to knowthat makes him so nervous.A. why it doesB. what he doesC.

问题补充：

Jim’s mother just wants to knowthat makes him so nervous.

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

D. what it is

解析：选D。考查强调句型和名词性从句。分析句子成分可以看出, know后面是宾语从句, 此处宾语从句为强调句型的特殊疑问句形式“特殊疑问词+is/it+that+句子其余成分”, 应使用正常语序, 且从句子成分和意义角度考虑, 应该使用what作主语, 故选D。