问题补充：
The reason the essay（作文） of the Anhui edition of the National College Entrance Exam is voted the worst is it makes test-takers at a total loss.
A. why; because
B. that; that
C. that; because
D. why; that
答案：
A. why; because
B. that; that
C. that; because
(答案→)D. why; that
解析：本题考查定语从句和表语从句。第一个空是定语从句，reason是先行词，引导词在从句作状语，用why；第二空是表语从句常用句式the reason is that……。
