—I have great trouble in the work by myself. Could you help me?
—No problem.
- A.finish
- B.to finish
- C.finishing
- D.to finishing
答案
正确答案:C
知识点:非谓语动词

have trouble (in) doing sth.是一个固定搭配,表“做某事有困难”。答案为C。

略
