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____from the heart trouble for years,he has to take some med

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____from the heart trouble for years,he has to take some medicine with him whenever he goes
A sufferd
B suffering
C having suffered
D Being suffered 为什么选C啊 ,我记得有些类似的题目是不用加have的,前面直接用动词的被动式
____from the heart trouble for years,he has to take some med
用现在完成时表示对现在造成的影响,直接用被动式的是独立主格结构,独立主格结构只在前后主语不一致的时候用