问题补充:
Nobody believed his reason for being absent from classhe had to meet his uncle at the airport.
A. why
B. that
C. where
D. because
答案:
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。