单选题 You fail the English exam again. You______so hard this term.
  • A. mustn' t have worked
  • B. needn' t have worked
  • C. can' t have worked
  • D. shouldn' t have worked
【正确答案】 C
【答案解析】[解析] 你英语考试又没有通过，你肯定这学期没有努力学习。Can’t have done，一定没有。