问题
选择题
Is this the reason__________at the meeting for his carelessness in his work?
A．he explained
B．what he explained
C．how he explained
D．why he explained
答案
答案：A
考查定语从句。从句意看，本空是定语从句表示“他在会议上提出的理由”，用that/which引导定语从句，连词在从句中做宾语，可省略。