Question

【题目】He has a heart trouble and the doctor finds it difficult ______.

A. treatingB. in treatingC. to treatD. for treating

Answer 1

【答案】C

【解析】

考查非谓语动词。句意：他有心脏病，医生发现很难治疗。根据固定结构“find it+形容词+to do sth.”表示“发现做某事……”，故选C。