How are you getting on with your work?- I can’t do it any longer. I will have to g

问题补充：

--- How are you getting on with your work?

--- I can’t do it any longer. I will have to get help.

A. carefully

B. quietly

C. alone

D. hard

答案：

A. carefully

B. quietly

(答案→)C. alone

D. hard

解析：根据后文内容I will have to get help.可知答案为C