单选题 The student said there were a few points in the essay he ______ impossible to comprehend.
  • A. ought to have
  • B. was finding
  • C. had found
  • D. would find


【正确答案】 C
【答案解析】[考点] 考查句子时态。
主句用的是一般过去时，所以从句中要用与过去对应的时态，由题意可知，“发现”的动作在“说”之前，故正确答案为C。