The doctors in ORBIS have done an important job the patients are all grateful to them.A.

问题补充：

The doctors in ORBIS have done an important job the patients are all grateful to them.

A. too, to

B. so, that

C. such, that

D. as, as

答案：

A. too, to

B. so, that

(答案→)C. such, that

D. as, as

解析：考查固定句型。句意“奥比斯里的医生做了一件这么重要的工作，以至于病人们都很感激他们。”so/such...that...“如此......以至于......”,so修饰形容词或副词，such修饰名词。 Job是名词，且可数；故用such。故选C。