Nobody believed his reason for being absent from the classhe had to meet his uncle at the

问题补充：

Nobody believed his reason for being absent from the classhe had to meet his uncle at the air port.

A. why

B. that

C. where

D. because

答案：

A. why

(答案→)B. that

C. where

D. because

解析：考查名词性从句中的同位语从句。句意：没有人相信他不来上课的原因是他去机场接他的父亲去了。用that作reason的同位语，并起解释说明的作用。所以选B。