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1. Not every prisoner can travel，and we have strict and fair regulations. Those selected________have performed well in the prison and are going to be released soon. A. could B. might C. must D. should 解析 考查情态动词的用法。根据“Not every prisoner can travel，and we have strict and fair regulations.”的提示，说明对外出旅行的囚犯有严格的规定，他们必须在监狱里表现良好，并且是即将释放的人，因此用must。 答案 C 2．(2011·江西百校高三模拟考试) I am going to buy the overcoat if the shop owner________lower the price. A．must B．should C．could D．will 解析 主要考查情态动词。分析句意：如果店主降价，我打算买这件外衣。A.must必须；B.should应该；两项均不符合实际情况，应排除。C.could能够；此句为真实条件句用could表过去，与主句中am going to(表将来)相矛盾。故排除。 D．will愿意，最恰当。 答案 D 3. (2011·山东师大附中第七次质量检测) According to the school rules, no student________go out of the school after eleven o’clock. A．will B．must C．may D．shall | 
