启教通信息平台
  首页 / 试题 / 高中英语 / 试题详细
  • 科目:英语
  • 题型:单选题
  • 难度:中等
  • 人气:1199

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
登录并查看解析

Never before______ so highly s