11页10.How is my mother ,doctor she is fine ,she went to bed at ten last night and now she ----for ei

题目

11页10.How is my mother ,doctor she is fine ,she went to bed at ten last night and now she ----for eight hours
A.had slept B.has slept C.had been asleep 理由

答案

B.has slept
现在完成时态,表示过去发生的动作一直持续到现在.