单选题 (Only then) he (became) aware of (the fact) that there were more difficulties ahead (than) he had expected.
  • A. Only then
  • B. became
  • C. the fact
  • D. than


【正确答案】 B
【答案解析】改为did he become。only放于句首且加副词时，后面句子要用倒装语序。本句的意思是：“直到那时他才意识到有着比原来想象中更多的困难。”