第22题: [单项选择]Our decision on whether to boost our long or short positions ______ on any change in the direction of the market, usually driven by the demands. A. was depended B. depend C. depends D. depending 参考答案:C 答案解析:中级问题 句子中没有谓语动词。考虑到单复数的问题,排除B选项。再从主动语态和被动语态的角度来考虑,在depend on这个“不及物动词+介词”的结构中,如果介词后面有宾语就是主动语态。本句中有宾语ch