--- How do you often go to work?
--- I ______go to work by car. But now on foot.A.used toB.am used toC.am used for
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A解析试题分析：be used to sth习惯于某事;used to do sth过去常常做某事.句意：你常常怎么去上班？——我过去常常开车去上班。但是现在步行。故选A。
考点：used to用法
点评：used to用法比较固定，需要注意use还可以作为被动语态使用，sth be used to do sth某物被用来做某事。