题目内容
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
【答案】
C
【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。
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