puzzled Li Lei a lot was his best friends didn’t come to school this morningA. That; wh

问题补充：

puzzled Li Lei a lot was his best friends didn’t come to school this morning．

A. That; why

B. That; what

C. What; whether

D. What; why

答案：

A. That; why

B. That; what

C. What; whether

(答案→)D. What; why

解析：考察名词性从句。本题第一空是由what引导的主语从句，what在句中做主语。第二空是表语从句，why在句中做原因状语。句义：让李磊很困惑的事情是为什么他的好朋友们今天上午没有来学校。故D正确。名词性从句要使用陈述语序。同时考查集中在引导词的选择上，连接词that, whether, if在句中不充当任何成分，只起连接作用；连接代词who(ever), which(ever), whom(ever),whose(ever),what(ever)在句中做主语，宾语，表语和定语；连接副词when, why, where, how，在句中做状语。应从上下句的句法关系着手分析，切不可‘望句形生答案’总的来说，考生在解答此类题型时，可用排除法，造句法或者还原法，造句法就是仿造原句的语法功能仿造出一个易懂易理解的句子，帮助判断。