It was difficult work nobody can do it.A. so thatB. such a thatC. such thatD. so a t

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