第9题: [单项选择]The director has been asked to state the company's position, but so far he has refused to _________himself on this issue. A. perform B. assign C. commit D. undertake 参考答案:C 答案解析:[解析]惯用搭配题。commit oneself on sth.表示“公开表明自己的意见”,与题中的state形成语义上的呼应,所以答案为[C]commit。[A]perform“表演;执行”,[B]