单选题 I received her mother's call at eleven, ______ that she was badly hurt in an accident yesterday.
  • A. Then did I know
  • B. Only then I knew
  • C. Only then did I know
  • D. Only then knew I
【正确答案】 C
【答案解析】[解析] only修饰句子的状语(副词、介词短语、状语从句)位于句首时，句子的主谓部分倒装。