题目内容
Mary used to _________ to work, but she is used to ________to work now.
A. riding a bike, taking a bus B. riding a bike, take a bus
C. ride a bike, taking a bus D. ride a bike, take a bus
解析:C. 考查短语的辨析。used to 后接动词原形;be/get used to后接动名词形式。因此,选择C答案。
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