【题目】________ from heart trouble for years, Professor White has to take some medicine with him wherever he goes.
A.SufferedB.SufferingC.Having sufferedD.Being suffered
在线课程【答案】C
【解析】
考查非谓语动词。句意：怀特教授患心脏病多年，他不得不走到哪里都带着药。suffer与Professor White构成主动关系，故排除A、D；又因两个动作有明显的先后顺序，故用完成时，答案应选C项。