1. Nobody believed his reason for being absent from the class ________ he had to meet his uncle at the airport.
A. why B. that
C. where D. because
【答案】B
【解析】
【详解】考查同位语从句。句意：没有人相信他缺课的原因是他得去机场接他的叔叔。分析句子结构，________ he had to meet his uncle at the airport.是一个同位语从句，解释说明his reason，引导词在从句中不作任何成分，也没有实际意义，用that引导该从句。故选B。
