Stefan from heart attack for more than ten years, but now he’s healthy and energetic.
A. had suffered
B. suffered
C. has suffered
D. has been suffering
网友回答
A. had suffered
(答案→)B. suffered
C. has suffered
D. has been suffering
解析：考查动词的时态。结合题目中的“now”可知，前面表达的是过去的情况，并且与现在没有关系，所以谓语动词应用一般过去时。全句大意：Stefan患心脏病十年多， 但是现在她很健康精力旺盛。