David has to admit the fact he has fallen behind the others in his class.A. whetherB. tha

问题补充：

David has to admit the fact he has fallen behind the others in his class.

A. whether

B. that

C. why

D. when

答案：

A. whether

(答案→)B. that

C. why

D. when

解析：考查同位语从句。本题同位语从句是解释名词the fact的内容，因为后面的句子表示的是一个确定意义的句子，故使用that引导即可。句意：David承认了这个事实，在班级里他已经落在了别人的后面。故B正确。