题目内容
【题目】The doctor says that the problem with her husband’s eyes ___by many reasons.
A. cause B. causes C. is caused D. are caused
【答案】C
【解析】
试题分析:句意:这个大夫说他丈夫眼的问题是由许多原因引起的。主语the problem是cause的承受者故句子用被动语态;根据语境可知,要用一般现在时的被动语态,故选C。
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