I___to my brother since last summerA.didn`t write B.hadn`t written C.haven`t written D.don`t write为什么,

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I___to my brother since last summerA.didn`t write B.hadn`t written C.haven`t written D.don`t write为什么,

I___to my brother since last summerA.didn`t write B.hadn`t written C.haven`t written D.don`t write为什么,
I___to my brother since last summerA.didn`t write B.hadn`t written C.haven`t written D.don`t write
为什么,

I___to my brother since last summerA.didn`t write B.hadn`t written C.haven`t written D.don`t write为什么,
有last summer,肯定不是一般现在时的D
因为有since,就是从什么时候,所以指的不是过去某个时间点,所以不用一般过去式A
答案B是过去完成时,这个主要指过去的过去,比如说昨天我就完成了什么,句子中就一个时间,提现不出过去的过去的意思
所以答案就是C,现在完成时,指从某个时间点一直持续到现在的动作