单选题 It's high time we ______something to stop road accidents.
  • A. did
  • B. are doing
  • C. will do
  • D. do
【正确答案】 A
【答案解析】[解析] “It's high time”后面的从句用一般过去时表示虚拟语气。所以根据题意应选A。