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】
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。
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