The doctor examined the patient carefully, only she was not seriously ill. A. foundB. to f

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A. found
(答案→)B. to find
C. finding
D. to be found
解析：测试非谓语动词， only +to do 表示意想不到的结果。“医生把那个病人仔仔细细地检查了一遍，结果发现他的病并不重”（医生原以为病人的病很重才把他仔仔细细地进行检查，“病不重”是医生未料到的）。