This dictionary is to my reading, but that one is .
A. great help; helpless
B. a great help; of no use
C. important; of few importance
D. very helpful; of no any use
网友回答
A. great help; helpless
(答案→)B. a great help; of no use
C. important; of few importance
D. very helpful; of no any use
解析：is to所以横线上应该填一个名词，倘若＿后是介词＂for则应填一个形容词．所以答案是a great help；of no use 中的“no后面不能再加 ＂any 因为no本身就相当于＂not any或not a 的意思。be of no use也就是be not useful 是一个固定搭配.所以答案是B