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英语单选题-It'stwelveo'clock,IthinkImustbeoffnow.-Oh,really?Iitatall.A.don'trealizeB.haven'trealizedC.didn'trealizeD.hadn'trealized

题目详情
英语单选题
-It's twelve o'clock,I think I must be off now.
-Oh,really?I______it at all.
A.don't realize B.haven't realized
C.didn't realize D.hadn't realized
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答案和解析
Choose C
这是关于时态的问题, 所以必须明确动词之间的时间顺序.
甲说 我要走了.
乙说 是么?我刚才没意识到这点.
显然,在甲说要走之前,乙不知带时间到了,所以要用过去时.选C.