问题
选择题
The question is _________ .
A．so hard for us to understand it
B．too hard for us to understand it
C．too hard for us to understand
D．so hard for us to understand
答案
答案：C
题目分析：句意：这道题对于我们来说太难理解了。Too…to结构表示“太…而不能”，the question做understand的逻辑宾语，因此不应再加it，否则重复。故选C。