Ⅰ.易混模块
1．A.what B．that
(1)He telephoned Mary________he wanted to see her.
答案：B 引导从句作telephoned的直接宾语，that无词义，不充当成分。
(2)This is________I want to say and that is all________I want to do.
答案：A B 第一空what引导表语从句，代词作用的连接代词，在从句中作say的宾语；第二空that引导一个定语从句，修饰all，that可以省略，在定语从句中作do的宾语。
(3)The coffee we had today was different from________we had yesterday.
答案：A what引导一个从句作介词from的宾语，作起关系代词作用的连接代词，在从句中作had的宾语。
(4)Madame Curie discovered________she called radium.
答案：A what引导一个从句作及物动词discovered的宾语，它作起关系代词作用的连接代词，在从句中作called的宾语。
