– Why you didn’t handed in your exercise paper? –Sorry, but I ____ that it should be turned in today...
2022-12-16 16:36:51 147次 2012-2013学年浙江省宁波市鄞州区高三5月适应性考试英语试卷（解析版） 单项填空 反馈错误 加入收藏 正确率 : 100%
题目内容：
– Why you didn’t handed in your exercise paper?
–Sorry, but I ____ that it should be turned in today.
A．didn’t know B．hadn’t known
C．haven’t known D．don’t know
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