I got up early this morning，but I ________ so because I was not on duty today．A．_刷题宝

题干

I got up early this morning，but I ________ so because I was not on duty today．

A．mustn’t have done	B．needn’t have done
C．didn’t need to do	D．can’t have done

上一题下一题 0.64难度单项选择更新时间:2016-06-15 06:37:54

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