Though we have worked out the plan,the hardest part is putting it into .
A. fact
B. reality
C. practice
D. deed
网友回答
A. fact
B. reality
(答案→)C. practice
D. deed
解析：本题考查根据语意和结构选用名词的能力。put...into practice付诸实施;turn into reality变成现实。句意为：尽管我们已经制订出了计划，而最艰难的是将其付诸实施。