题目

一How does your brother go to school? 一He        ride a bike, but now he        there to keep fit. A．used to; is used to walk B．used to; is used to walking C．was used to; is used to walking D．was used to; is used to walk 答案：B 【解析】句意：——你弟弟怎么去上学？——他过去常骑自行车，但现在习惯走路去健身了。考查动词形式辨析题。used to过去时常做某事，不定式结构，可排除CD选项；be used to已经习惯做什么……，介词to后接动名词，可排除C；根据句意语境，可知选B。

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