Their plan was . With it we had little trouble in finishing the work.A. successB. succeed

问题补充：

Their plan was . With it we had little trouble in finishing the work.

A. success

B. succeed

C. a success

D. a successful

答案：

A. success

B. succeed

(答案→)C. a success

D. a successful

解析：抽象名词具体化本题中的a success指成功的事相当于a successful plan。句意：这个计划很成功，有了这个计划我们毫不费劲的完成了工作。