【题目】The reason ________ he gave for his absence from the meeting was ________ he was caught in a traffic jam.
A. Why; because B. What; how
C. That; that D. What; if
在线课程【答案】C
【解析】
试题分析：定语从句和表语从句的考查。他给出的缺席会议的理由就是他遇到了交通阻塞。
前面是定语从句，先行词reason 做从句谓语gave 的宾语，所以引导词用that; 后句是表语从句，因为从句不缺句子成分所以引导词用that。因此C为正确选项。