问题补充:
It was difficult work nobody can do it.
A. so, that
B. such a that
C. such , that
D. so a, that
答案:
A. so, that
B. such a that
(答案→)C. such , that
D. so a, that
解析:so…that如此……以至于,后修饰修饰形容词或副词,such…that如此……以至于,后修饰名词,题中的中心词是不可数名词work,如此难的工作应表达为such difficult work,句意:这是如此难的工作以至于没有人能做。故选C