题目内容

He found_ ________very difficult ________the math problem．

A．that, to solve B. this, solving

C. it, to solve D. it, solving

 

C

【解析】试题分析：that指示代词，指代距离说话人较远的人或者事物；it人称代词，可以用作形式宾语或者形式主语，指代下文不定式内容。句意：他发现解决这个数学问题非常难。本句中it作形式宾语指代下文不定式内容，故选C。

考点：考查固定句式的用法。

 

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