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time,Dennywouldcertainlyhavecomeandhelpme.A.IfshehadB.HadshehadC.IfshewouldhaveD.Didshehave我觉得是先A,可参考答案给的是B,为什么,求讲解,

题目详情
_______ time,Denny would certainly have come and help me.
A.If she had B.Had she had
C.If she would have D.Did she have
我觉得是先A,可参考答案给的是B,为什么,求讲解,
▼优质解答
答案和解析
这是虚拟语气的用法,对过去的虚拟要用过去完成时.
had she had time=if she had had time.
实际上她那时候没有时间,所以用虚拟语气.