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

问题补充：

It was difficult work nobody can do it.

A. so, that

B. such, that

C. such a, that

D. so a, that

答案：

A. so, that

(答案→)B. such, that

C. such a, that

D. so a, that

解析：句意：它是如此困难的工作以至于没有人能做出来。so是副词，后接形容词或副词；such是形容词，后接名词。故选B。