单选题 Which of the following sentences as INCORRECT?
  • A. Had I better take him upstairs?
  • B. Had I not better take him upstairs?
  • C. Hadn't I better take him upstairs?
  • D. Had I better not take him upstairs?


【正确答案】 D
【答案解析】[解析] 否定疑问“难道……”可以用Had I not better…或Hadn't I better…，not要放在better前面。