问题
选择题
It’s _____ hard problem for the twins that ____ of them can work it out.
A．so; neither
B．such a; neither
C．so a; neither
D．such a; none
答案
答案：B
表示如此…以至于…有两种句式结构so…that…和so…that…,so后跟形容词或副词，而such后跟名词，根据题意problem是可数名词单数故用such a;有因neither表示两者都不…因此选B.