单选题 When the man came in, carrying the machine gun, most of us looked up in surprise, because we ______ anything like it before.
  • A. have never seen
  • B. never saw
  • C. didn't see
  • D. had never seen
【正确答案】 D
【答案解析】[解析] 应选过去完成时，因为“(在我们看见那个拿机关枪的人)以前我们从未见过这种情况。”到过去某一时间为止的动作要用过去完成时。