______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he：Suffered B：Suffering C：Having suffered D：Being suffered

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______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he：Suffered B：Suffering C：Having suffered D：Being suffered

______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he：Suffered B：Suffering C：Having suffered D：Being suffered
______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he
：Suffered
B：Suffering
C：Having suffered
D：Being suffered

______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he：Suffered B：Suffering C：Having suffered D：Being suffered
c
suffer 不及物
用完成式表示对现在的影响

c

B

B. 现在分词表原因。

______from heart trouble for years.______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he goes.A：Suffered B：Suffering C：Having suffered D：Being suffered ______from heart trouble for years,Professsor Wang has to take some medicine with him wherever he：Suffered B：Suffering C：Having suffered D：Being suffered Heart. Heart Heart heart heart HEART heart heart heart heart heart heart heart heart heart heart