◎ 题干
– ________ do you exercise?
– I used to exercise every day, but now I exercise twice a week.
A. How often                B. How soon             C. How long
◎ 答案
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◎ 解析
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◎ 知识点
    根据n多题专家分析,试题“– ________ do you exercise? – I used to exercise every day, but now I exercise twice a week.A. How often B. How soon C. How long…”主要考查了你对  【助动词】【介词短语】【固定搭配】【疑问词组】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。