单选题 I can't find my wallet now. I______it at home.
  • [A] must have forgotten
  • [B] must have left
  • [C] must leave
  • [D] must forget


【正确答案】 B
【答案解析】首先要用表示猜测的must have结构，把某东西落在哪里要用 leave，不是forget，所以答案选B。