因为后面有"because I had no .."
所以前后还有时间上的距离,即我起床,然后没有事情做
因此要用完成时态
i got up early that morning,but i__so because i had no work to do.
i got up early that morning,but i__so because i had no work to do.
A.mustn't have done B.didn't need to do C.needn't have done D.must have to study
B为什么不对
A.mustn't have done B.didn't need to do C.needn't have done D.must have to study
B为什么不对
英语人气：867 ℃时间：2020-02-03 18:09:03
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