she___for ten hours at least.it was at nine that she fell asleep last hight.为什么填 slept?

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she___for ten hours at least.it was at nine that she fell asleep last hight.为什么填 slept?
she___for ten hours at least.it was at nine that she fell asleep last hight.为什么填 slept?

she___for ten hours at least.it was at nine that she fell asleep last hight.为什么填 slept?
表示昨晚上的状态,用一般过去式

应该是填 had slept吧
根据for ten hours 要填完成时 根据后面的was 用过去式