He can’t read or write,who do you think he

He can't read or write,who do you think he _this letter?A had write B had wrote C has written
D has wrote
分析分析!

选c.是表示过去发生的事情对现在的影响.
再问： 你错了 答案是A 不过谢谢了 thanks anyway!
再答： 哦。那就是过去的事情对过去的影响了，但我觉得我的也能解释地通。
再问： 貌似你的解释也不对啊 我还是不懂！thanks the same ,again!
再答： 这个答案100%错了。再怎么说也应该是had written啊。