题目内容
【题目】---How does your mother go to work every day?
---She used to a bus, but now he is used to .
A. take; walk B. taking; walk C. take; walking
【答案】C
【解析】句意：——你妈妈每天怎么去上班？——她过去常常乘公共汽车，但是现在她习惯走着。根据used to do sth 过去常常做某事，be used to doing sth习惯于做某事，故选C
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