Nobody believed his reason for being absent from class he had to meet his uncle at the airport.
A. why
B. that
C. where
D. because
网友回答
A. why
(答案→)B. that
C. where
D. because
解析：
that在此引导同位语从句，修饰名词his reason。此题的难点是，his reason后带有用作定语的介词短语for being absent from class，如果撇开这个介词短语，问题就变得简单了。