【题目】I find these problems are easy ________________.
A.to be worked outB.to work them out
C.to work outD.to be worked them out
在线课程【答案】C
【解析】
考查主动表达被动。句意：我发现这些问题很容易解决。“名词（代词）＋ be easy(difficult, fit等形容词) ＋ 不定式” 结构中，有时尽管主语是动作的承受者，不定式在意义上是被动，形式上却是主动，句中these problems是work out的宾语。故选C。