Question

【题目】They realized that the problem Ted put forward was difficult _______.

A.to solveB.solvedC.to be solvedD.solving

Answer 1

【答案】A

【解析】

考查非谓语动词。句意：他们意识到泰德提出的问题很难解决。结合短语be difficult to do sth.“难以；很难……”后跟不定式，且在此结构中，若主语与其后的不定式为动宾关系，那么该不定式习惯上要用主动形式表示被动意义。故用to solve形式。故选A。