Never before so highly successful in his attempts to forecast the weather accurately on a small scale．
A. man has been
B. man is
C. has man been
D. will be man
网友回答
A. man has been
B. man is
(答案→)C. has man been
D. will be man
解析： 考查时态和倒装句型。never置于句首时句子要倒装。never before用于现在完成时，因此答案为C。